subaltern(n = noun.person) - a British commissioned army officer below the rank of captain;
is a kind of commissioned military officer
Derived form adjective subaltern₁

   subaltern(s = adj.all) junior-grade, lower-ranking, lowly, petty, secondary - inferior in rank or status; "the junior faculty"; "a lowly corporal"; "petty officialdom"; "a subordinate functionary"
Derived form noun subaltern₁

1.  Ranked or ranged below; subordinate; inferior; specifically (Mil.), ranking as a junior officer; being below the rank of captain; as, a subaltern officer. [1913 Webster]

2.  Asserting only a part of what is asserted in a related proposition. [1913 Webster]

1.  A person holding a subordinate position; specifically, a commissioned military officer below the rank of captain. [1913 Webster]

2.  A subaltern proposition. Whately. [1913 Webster]

subaltern, n. & adj.
--n. Brit. Mil. an officer below the rank of captain, esp. a second lieutenant.
--adj.
1 of inferior rank.
2 Logic (of a proposition) particular, not universal.

Etymology:
LL subalternus f. alternus ALTERNATE adj.

N  inferiority, minority, subordinacy, shortcoming, deficiency, minimum, smallness, imperfection, lower quality, lower worth, commonalty, inferior, smaller, small, minor, less, lesser, deficient, minus, lower, subordinate, secondary, secondrate, sub, subaltern, thrown into the shade, weighed in the balance and found wanting, not fit to hold a candle to, can't hold a candle to, least, smallest &c (little) (small), lowest, diminished, reduced, unimportant, less, under the mark, below the mark, below par, at the bottom of the scale, at a low ebb, at a disadvantage, short of, under.

N  combatant, disputant, controversialist, polemic, litigant, belligerent, competitor, rival, corrival, fighter, assailant, champion, Paladin, mosstrooper, swashbuckler fire eater, duelist, bully, bludgeon man, rough, prize fighter, pugilist, boxer, bruiser, the fancy, gladiator, athlete, wrestler, fighting-cock, game-cock, warrior, soldier, fighting man, Amazon, man at arms, armigerent, campaigner, veteran, swordsman, sabreur, redcoat, military man, Rajput, armed force, troops, soldiery, military forces, sabaoth, the army, standing army, regulars, the line, troops of the line, militia, yeomanry, volunteers, trainband, fencible, auxiliary, bersagliere, brave, garde-nationale, garde-royale, minuteman, auxiliary forces, reserve forces, reserves, posse comitatus, national guard, gendarme, beefeater, guards, guardsman, yeomen of the guard, life guards, household troops, janissary, myrmidon, Mama, Mameluke, spahee, spahi, Cossack, Croat, Pandoz, irregular, guerilla, partisan, condottiere, franctireur, tirailleur, bashi-bazouk, vietminh, vietcong, shining path, contras, huk, hukbalahap, mercenary, soldier of fortune, hired gun, gunfighter, gunslinger, bushwhacker, free lance, companion, Hessian, hit man torpedo, soldier, levy, draught, Landwehr, Landsturm, conscript, recruit, cadet, raw levies, infantry, infantryman, private, private soldier, foot soldier, Tommy Atkins, rank and file, peon, trooper, sepoy, legionnaire, legionary, cannon fodder, food for powder, officer, subaltern, ensign, standard bearer, spearman, pikeman, spear bearer, halberdier, lancer, musketeer, carabineer, rifleman, jager, sharpshooter, yager, skirmisher, grenadier, fusileer, archer, bowman, horse and foot, horse soldier, cavalry, horse, artillery, horse artillery, light horse, voltigeur, uhlan, mounted rifles, dragoon, hussar, light dragoon, heavy dragoon, heavy, cuirassier, Foot Guards, Horse Guards, gunner, cannoneer, bombardier, artilleryman, matross, sapper, sapper and miner, engineer, light infantry, rifles, chasseur, zouave, military train, coolie, army, corps d'armee, host, division, battalia, column, wing, detachment, garrison, flying column, brigade, regiment, corps, battalion, sotnia, squadron, company, platoon, battery, subdivision, section, squad, piquet, picket, guard, rank, file, legion, phalanx, cohort, cloud of skirmishers, war horse, charger, destrier, marine, man-of-war's man, navy, wooden walls, naval forces, fleet, flotilla, armada, squadron, man-of-war, destroyer, submarine, minesweeper, torpedo-boat, torpedo-destroyer, patrol torpedo boat, PT boat, torpedo- catcher, war castle, H, M, S, battleship, battle wagon, dreadnought, line of battle ship, ship of the line, aircraft carrier, carrier, flattop, helicopter carrier, missile platform, missile boat, ironclad, turret ship, ram, monitor, floating battery, first- rate, frigate, sloop of war, corvette, gunboat, bomb vessel, flagship, guard ship, cruiser, armored cruiser, protected cruiser, privateer, tender, store ship, troop ship, transport, catamaran, merchant marine.

N  master, padrone, lord, lord paramount, commander, commandant, captain, chief, chieftain, sirdar, sachem, sheik, head, senior, governor, ruler, dictator, leader, boss, cockarouse, sagamore, werowance, lord of the ascendant, cock of the walk, cock of the roost, gray mare, mistress, potentate, liege, liege lord, suzerain, sovereign, monarch, autocrat, despot, tyrant, oligarch, crowned head, emperor, king, anointed king, majesty, imperator, protector, president, stadholder, judge, ceasar, kaiser, czar, tsar, sultan, soldan, grand Turk, caliph, imaum, shah, padishah, sophi, mogul, great mogul, khan, lama, tycoon, mikado, tenno, inca, cazique, voivode, landamman, seyyid, Abuna, cacique, czarowitz, grand seignior, prince, duke, archduke, doge, elector, seignior, marland, margrave, rajah, emir, wali, sheik nizam, nawab, empress, queen, sultana, czarina, princess, infanta, duchess, margravine, czarevna, czarita, maharani, rani, rectrix, regent, viceroy, exarch, palatine, khedive, hospodar, beglerbeg, three-tailed bashaw, pasha, bashaw, bey, beg, dey, scherif, tetrarch, satrap, mandarin, subahdar, nabob, maharajah, burgrave, laird, collector, commissioner, deputy commissioner, woon, the authorities, the powers that be, the government, staff, etat major, aga, official, man in office, person in authority, sircar, sirkar, Sublime Porte, marshal, field marshal, marechal, general, generalissimo, commander in chief, seraskier, hetman, lieutenant general, major general, colonel, lieutenant colonel, major, captain, centurion, skipper, lieutenant, first lieutenant, second lieutenant, sublieutenant, officer, staff officer, aide-de-camp, brigadier, brigade major, adjutant, jemidar, ensign, cornet, cadet, subaltern, noncommissioned officer, warrant officer, sergeant, sergeant major, color sergeant, corporal, corporal major, lance corporal, acting corporal, drum major, captain general, dizdar, knight marshal, naik, pendragon, mayor, mayoralty, prefect, chancellor, archon, provost, magistrate, syndic, alcalde, alcaid, burgomaster, corregidor, seneschal, alderman, councilman, committeeman, councilwoman, warden, constable, portreeve, lord mayor, officer, dewan, fonctionnaire, admiral, admiralty, rear admiral, vice admiral, port admiral, commodore, captain, commander, lieutenant, ensign, skipper, mate, master, officer of the day, OD, navarch, da locum melioribus, der Furst ist der erste Diener seines Staats, the prince is the first servant of his state, lord of thy presence and no land beside.

N  servant, subject, liegeman, servant, retainer, follower, henchman, servitor, domestic, menial, help, lady help, employe, attache, official, retinue, suite, cortege, staff, court, attendant, squire, usher, page, donzel, footboy, train bearer, cup bearer, waiter, lapster, butler, livery servant, lackey, footman, flunky, flunkey, valet, valet de chambre, equerry, groom, jockey, hostler, ostler, tiger, orderly, messenger, cad, gillie, herdsman, swineherd, barkeeper, bartender, bell boy, boots, boy, counterjumper, khansamah, khansaman, khitmutgar, yardman, bailiff, castellan, seneschal, chamberlain, major-domo, groom of the chambers, secretary, under secretary, assistant secretary, clerk, subsidiary, agent, subaltern, underling, understrapper, man, maid, maidservant, handmaid, confidente, lady's maid, abigail, soubrette, amah, biddy, nurse, bonne, ayah, nursemaid, nursery maid, house maid, parlor maid, waiting maid, chamber maid, kitchen maid, scullery maid, femme de chambre, femme fille, camarista, chef de cuisine, cordon bleu, cook, scullion, Cinderella, potwalloper, maid of all work, servant of all work, laundress, bedmaker, journeyman, charwoman, bearer, chokra, gyp (Cambridge), hamal, scout (Oxford), serf, vassal, slave, negro, helot, bondsman, bondswoman, bondslave, ame damnee, odalisque, ryot, adscriptus gleboe, villian, villein, beadsman, bedesman, sizar, pensioner, pensionary, client, dependant, dependent, hanger on, satellite, parasite, led captain, protege, ward, hireling, mercenary, puppet, tool, creature, badge of slavery, bonds, in the train of, in one's pay, in one's employ, at one's call, in bonds.

N  commonality, commonalty, democracy, obscurity, low condition, low life, low society, low company, bourgeoisie, mass of the people, mass of society, Brown Jones and Robinson, lower classes, humbler classes, humbler orders, vulgar herd, common herd, rank and file, hoc genus omne, the many, the general, the crowd, the people, the populace, the multitude, the million, the masses, the mobility, the peasantry, king Mob, proletariat, fruges consumere nati, demos, hoi polloi, great unwashed, man in the street, mob, rabble, rabble rout, chaff, rout, horde, canaille, scum of the people, residuum of the people, dregs of the people, dregs of society, swinish multitude, foex populi, trash, profanum vulgus, ignobile vulgus, vermin, riffraff, ragtag and bobtail, small fry, commoner, one of the people, democrat, plebeian, republican, proletary, proletaire, roturier, Mr, Snooks, bourgeois, epicier, Philistine, cockney, grisette, demimonde, peasant, countryman, boor, carle, churl, villain, villein, terrae filius, son of the land, serf, kern, tyke, tike, chuff, ryot, fellah, longshoreman, swain, clown, hind, clod, clodhopper, hobnail, yokel, bog-trotter, bumpkin, plowman, plowboy, rustic, hayseed, lunkhead, chaw-bacon, tiller of the soil, hewers of wood and drawers of water, groundling, gaffer, loon, put, cub, Tony Lumpkin, looby, rube, lout, underling, gamin, rough, pot- wallopper, slubberdegullion, vulgar fellow, low fellow, cad, curmudgeon, upstart, parvenu, skipjack, nobody, nobody one knows, hesterni quirites, pessoribus orti, bourgeois gentilhomme, novus homo, snob, gent, mushroom, no one knows who, adventurer, man of straw, beggar, gaberlunzie, muckworm, mudlark, sans culotte, raff, tatterdemalion, caitiff, ragamuffin, Pariah, outcast of society, tramp, vagabond, bezonian, panhandler, sundowner, chiffonnier, Cinderella, cinderwench, scrub, jade, gossoon, Goth, Vandal, Hottentot, Zulu, savage, barbarian, Yahoo, unlicked cub, rough diamond, barbarousness, barbarism, boeotia, ignoble, common, mean, low, base, vile, sorry, scrubby, beggarly, below par, no great shakes, homely, homespun, vulgar, low-minded, snobbish, plebeian, proletarian, of low parentage, of low origin, of low extraction, of mean parentage, of mean origin, of mean extraction, lowborn, baseborn, earthborn, mushroom, dunghill, risen from the ranks, unknown to fame, obscure, untitled, rustic, uncivilized, loutish, boorish, clownish, churlish, brutish, raffish, rude, unlicked, barbarous, barbarian, barbaric, barbaresque, cockney, born within sound of Bow bells, underling, menial, subaltern, below the salt, dummodo sit dives barbarus ipse placet.