nobody(n = noun.person) cipher, cypher, nonentity - a person of no influence;
is a kind of common man, common person, commoner
has particulars: pip-squeak, small fry, squirt, jackanapes, lightweight, whippersnapper

1.  No person; no one; not anybody. [1913 Webster]

2.  A person of no influence or importance; an insignificant or contemptible person. [1913 Webster]

nobody, pron. & n.
--pron. no person.
--n. (pl. -ies) a person of no importance, authority, or position.

Idiom:
like nobody's business see BUSINESS. nobody's fool see FOOL.

Etymology:
ME f. NO(1) + BODY (= person)

N  unsubstantiality, insubstantiality, nothingness, nihility, no degree, no part, no quantity, no thing, nothing, naught, nil, nullity, zero, cipher, no one, nobody, never a one, ne'er a one, no such thing, none in the world, nothing whatever, nothing at all, nothing on earth, not a particle, all talk, moonshine, stuff and nonsense, matter of no importance, matter of no consequence, thing of naught, man of straw, John Doe and Richard Roe, faggot voter, nominis umbra, nonentity, flash in the pan, vox et praeterea nihil, shadow, phantom, dream, ignis fatuus, such stuff as dreams are made of, air, thin air, vapor, bubble, baseless fabric of a vision, mockery, hollowness, blank, void, inanity, fool's paradise, unsubstantial, baseless, groundless, ungrounded, without foundation, having no foundation, visionary, immaterial, spectral, dreamy, shadowy, ethereal, airy, cloud built, cloud formed, gossamery, illusory, insubstantial, unreal, vacant, vacuous, empty, eviscerated, blank, hollow, nominal, null, inane, there's nothing in it, an ocean of dreams without a sound.

N  zero, nothing, null, nul, naught, nought, void, cipher, goose egg, none, nobody, no one, nichts, nixie, nix, zilch, zip, zippo, not a soul, ame qui vive, absence, unsubstantiality, not one, not a one, not any, nary a one, not a, never a, not a whit of, not an iota of, not a drop of, not a speck of, not a jot, not a trace of, not a hint of, not a smidgen of, not a suspicion of, not a shadow of, neither hide nor hair of.

N  absence, inexistence, nonresidence, absenteeism, nonattendance, alibi, emptiness, void, vacuum, vacuity, vacancy, tabula rasa, exemption, hiatus, lipotype, truant, absentee, nobody, nobody present, nobody on earth, not a soul, ame qui vive, absent, not present, away, nonresident, gone, from home, missing, lost, wanting, omitted, nowhere to be found, inexistence, empty, void, vacant, vacuous, untenanted, unoccupied, uninhabited, tenantless, barren, sterile, desert, deserted, devoid, uninhabitable, without, minus, nowhere, elsewhere, neither here nor there, in default of, sans, behind one's back, the bird has flown, non est inventus, absence makes the heart grow fonder, absent in body but present in spirit, absento nemo ne nocuisse velit, Achilles absent was Achilles still, aux absents les os, briller par son absence, conspicuous by his absence, in the hope to meet shortly again and make our abs.

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.