Merriam-Webster's Dictionary and Thesaurus - Merriam-Webster [752]
— ir·re·duc·ibly adverb
ir·re·fut·able adjective : impossible to refute
Synonyms
incontestable, indisputable, indubitable, unanswerable, undeniable, unquestionable; also certain, definite, positive, sure; unambiguous, unequivocal; absolute, clear, conclusive, decisive; uncontested, undisputed
Antonyms
answerable, debatable, disputable, questionable
irreg abbreviation irregular
ir·reg·u·lar adjective 1 : not regular : not natural or uniform
2 : not conforming to the normal or usual manner of inflection <~ verbs>
3 : not belonging to a regular or organized army <~ troops>
— irregular noun
— ir·reg·u·lar·ly adverb
Synonyms
aberrant, abnormal, anomalous, atypical, deviant, unnatural—more at DEVIANT
informal, unceremonious, unconventional, unorthodox—more at INFORMAL
ir·reg·u·lar·i·ty noun, plural -ties 1 : something that is irregular
2 : the quality or state of being irregular
3 : occasional constipation
ir·rel·e·vant adjective : not relevant
— ir·rel·e·vance noun
Synonyms
extraneous, immaterial; also inconsequential, insignificant, unimportant; meaningless, pointless, senseless, useless; inappropriate, inapt, unsuitable
ir·re·li·gious adjective : lacking religious emotions, doctrines, or practices
Synonyms
blasphemous, nonreligious, sacrilegious
Antonyms
religious
ir·re·me·di·a·ble adjective : impossible to remedy or correct
Synonyms
hopeless, incorrigible, incurable, irredeemable, unrecoverable, unredeemable—more at HOPELESS
ir·re·mov·able adjective : not removable
ir·rep·a·ra·ble adjective : impossible to make good, undo, repair, or remedy <~ damage>
Synonyms
irredeemable, irremediable, unrecoverable, unredeemable; also irreplaceable, irrevocable
Antonyms
redeemable, remediable, retrievable
ir·re·place·able adjective : not replaceable
ir·re·press·ible adjective : impossible to repress or control
ir·re·proach·able adjective : not reproachable
Synonyms
blameless, clear, faultless, guiltless, impeccable, innocent, irreproachable—more at INNOCENT
ir·re·sist·ible adjective : impossible to successfully resist
— ir·re·sist·ibly adverb
ir·res·o·lute adjective : uncertain how to act or proceed : VACILLATING
— ir·res·o·lute·ly adverb
ir·res·o·lu·tion noun : lack of resolution : a fluctuation of mind (as in doubt or between hope and fear)
Synonyms
hesitancy, hesitation, indecision, vacillation—more at HESITATION
ir·re·spec·tive of preposition : without regard to
ir·re·spon·si·ble adjective : not responsible
— ir·re·spon·si·bil·i·ty noun
— ir·re·spon·si·bly adverb
Synonyms
foolhardy, reckless—more at RECKLESS
ir·re·triev·able adjective : not retrievable : IRRECOVERABLE
ir·rev·er·ence noun 1 : lack of reverence
2 : an irreverent act or utterance
Synonyms
blasphemy, defilement, desecration, impiety, sacrilege—more at BLASPHEMY
ir·rev·er·ent adjective : lacking proper respect or seriousness; also : SATIRIC
— ir·rev·er·ent·ly adverb
ir·re·vers·ible adjective : incapable of being reversed
ir·rev·o·ca·ble adjective : incapable of being revoked or recalled
— ir·rev·o·ca·bly adverb
ir·ri·gate verb -gat·ed; -gat·ing : to supply (as land) with water by artificial means; also : to flush with liquid
— ir·ri·ga·tion noun
Synonyms
flush, rinse, sluice, wash—more at FLUSH
ir·ri·ta·bil·i·ty noun 1 : the property of living things and of protoplasm that enables reaction to stimuli
2 : the quality or state of being irritable; especially : readiness to become annoyed or angry
Synonyms
grumpiness, peevishness
ir·ri·ta·ble adjective : capable of being irritated; especially : readily or easily irritated
— ir·ri·ta·bly adverb
Synonyms
choleric, crabby, cranky, cross, crotchety, grouchy, grumpy, irascible, peevish, perverse, petulant, short-tempered, snappish, snappy, snippy, testy, waspish; also bearish, bilious, cantankerous, disagreeable, dyspeptic, ill-humored, ill-natured, ill-tempered, ornery, surly; sensitive, sulky, thin-skinned, touchy;