1.  irony(n = noun.communication) caustic remark, sarcasm, satire - witty language used to convey insults or scorn; "he used sarcasm to upset his opponent"; "irony is wasted on the stupid"; "Satire is a sort of glass, wherein beholders do generally discover everybody's face but their own"
is a kind of humor, humour, wit, witticism, wittiness
Derived forms adjective ironic₁, adjective ironical₂, noun ironist₁

2.  irony(n = noun.attribute) - incongruity between what might be expected and what actually occurs; "the irony of Ireland's copying the nation she most hated"
is a kind of incongruity, incongruousness
has particulars: socratic irony
Derived forms adjective ironic₂, adjective ironical₁

3.  irony(n = noun.communication) - a trope that involves incongruity between what is expected and what occurs;
is a kind of figure, figure of speech, image, trope
has parts: antiphrasis
has particulars: dramatic irony
Derived forms adjective ironic₂, adjective ironical₁

1.  Made or consisting of iron; partaking of iron; iron; as, irony chains; irony particles; -- In this sense iron is the more common term. Woodward. [1913 Webster]

2.  Resembling iron in taste, hardness, or other physical property. [1913 Webster]

1.  Dissimulation; ignorance feigned for the purpose of confounding or provoking an antagonist. [1913 Webster]

2.  A sort of humor, ridicule, or light sarcasm, which adopts a mode of speech the meaning of which is contrary to the literal sense of the words. [1913 Webster]

irony, n. (pl. -ies)
1 an expression of meaning, often humorous or sarcastic, by the use of language of a different or opposite tendency.
2 an ill-timed or perverse arrival of an event or circumstance that is in itself desirable.
3 the use of language with one meaning for a privileged audience and another for those addressed or concerned.

irony, adj. of or like iron.

N  ridicule, derision, sardonic smile, sardonic grin, irrision, scoffing, mockery, quiz, banter, irony, persiflage, raillery, chaff, badinage, quizzing, asteism, squib, satire, skit, quip, quib, grin, parody, burlesque, travesty, travestie, farce, caricature, buffoonery, practical joke, horseplay, scorn, contempt, derisory, derisive, mock, mocking, sarcastic, ironic, ironical, quizzical, burlesque, Hudibrastic, scurrilous, in ridicule.

N  disrespect, disesteem, disestimation, disparagement irreverence, slight, neglect, spretae injuria formae, superciliousness, vilipendency, vilification, contumely, affront, dishonor, insult, indignity, outrage, discourtesy, practical joking, scurrility, scoffing, sibilance, hissing, sibilation, irrision, derision, mockery, irony, sarcasm, hiss, hoot, boo, gibe, flout, jeer, scoff, gleek, taunt, sneer, quip, fling, wipe, slap in the face, disrespectful, aweless, irreverent, disparaging, insulting, supercilious, contemptuous, patronizing, rude, derisive, sarcastic, scurrile, scurrilous, contumelious, unrespected, unworshiped, unenvied, unsaluted, unregarded, disregarded, disrespectfully.

N  metaphor, figure of speech, facon de parler, way of speaking, colloquialism, phrase, figure, trope, metaphor, enallage, catachresis, metonymy, synecdoche, autonomasia, irony, figurativeness, image, imagery, metalepsis, type, anagoge, simile, personification, prosopopoeia, allegory, apologue, parable, fable, allusion, adumbration, application, exaggeration, hyperbole, association, association of ideas (analogy), metaphorical, figurative, catachrestical, typical, tralatitious, parabolic, allegorical, allusive, anagogical, ironical, colloquial, tropical, so to speak, so to say, so to express oneself, as it were, mutato nomine de te fabula narratur.

N  untruth, falsehood, lie, story, thing that is not, fib, bounce, crammer, taradiddle, whopper, jhuth, forgery, fabrication, invention, misstatement, misrepresentation, perversion, falsification, gloss, suggestio falsi, exaggeration, invention, fabrication, fiction, fable, nursery tale, romance, absurd story, untrue story, false story, trumped up story, trumped up statement, thing devised by the enemy, canard, shave, sell, hum, traveler's tale, Canterbury tale, cock and bull story, fairy tale, fake, claptrap, press agent's yarn, puff, puffery (exaggeration), myth, moonshine, bosh, all my eye and Betty Martin, mare's nest, farce, irony, half truth, white lie, pious fraud, mental reservation, pretense, pretext, false plea, subterfuge, evasion, shift, shuffle, make-believe, sham, profession, empty words, Judas kiss, disguise, untrue, false, phony, trumped up, void of foundation, without- foundation, fictive, far from the truth, false as dicer's oaths, unfounded, ben trovato, invented, fabulous, fabricated, forged, fictitious, factitious, supposititious, surreptitious, elusory, illusory, ironical, soi-disant, se non e vero e ben trovato, where none is meant that meets the ear.

dramatic irony, socratic irony