Synonyms Starting with O
One Synonyms : united, whole, undivided, entire, integral, single, individual, complete, coordinated, integrated, intact, unitary, total.One-horse Synonyms : unimportant.One-sided Synonyms : partial, unfair, biased, unjust, prejudiced, warped, partisan.unequal, unbalanced, uneven, lopsided, mismatched, runaway.One-track Synonyms : single-minded, limited, undiversified, restricted, circumscribed, undeviating, narrow, cramped, inhibited, compulsive, unimaginative, persistent.Oneness Synonyms : singleness, sameness, identity, unity, solidarity, integrity, wholeness, unification, individuality.agreement, concord, harmony, accord, amity, unity, coherence, union.Onerous Synonyms : arduous, burdensome, exacting, oppressive, heavy, weighty, difficult, hard, formidable, toilsome, taxing, distressing, cumbersome, demanding, overpowering, overwhelming.Onetime Synonyms : former.Ongoing Synonyms : continuing, progressing, functioning, proceeding, forward moving, advancing, operating, progressive, prosperous, growing, developing, successful, workable, viable, unfolding, evolving.Onlooker Synonyms : spectator, bystander, observer, witness, looker-on, viewer, beholder, watcher, eyewitness, attendant, kibitzer.Only Synonyms : solely, merely, exclusively, uniquely, singly, alone, just, but, no more than.alone, sole, single, solitary, unique, exclusive, distinct, lone.Onrush Synonyms : onset, flux, torrent, flood, assault, attack, storm, deluge, access, outburst.Onset Synonyms : outset.Onslaught Synonyms : attack, incursion, assault, raid, foray, aggression, invasion, offensive, charge, onset, offense, encounter, push, putsch, coup.Onus Synonyms : blame, responsibility, stigma, liability, debt, dishonor, imputation, shame.burden, obligation, duty, responsibility, load, cross, burden of proof.Onward Synonyms : forward, ahead, on, forth, along, in advance, beyond, frontward, headward.Oodles Synonyms : many.Ooze Synonyms : leak, seep, percolate, filter, exude, leach, transpire, strain, emit, discharge, dribble, drain, escape.mud.Opacity Synonyms : impermeability, density, imperviousness, obscurity, opaqueness, cloudiness, dullness, thickness, darkness, shadiness.Opaque Synonyms : impervious, murky, obfuscated, dense, turbid, clouded, obscure.stupid, dense, obtuse, thick, thickheaded, ignorant, unenlightened, unintelligent, crass, insensitive, cloddish, dull.Open Synonyms : public, accessible, available, vacant, unoccupied, unrestricted, free.unconcealed, overt, clear, apparent, exposed, uncovered, manifest.unobstructed, unlocked, unsealed, agape, accessible, ajar, unbarOpen-and-shut Synonyms : simple, obvious, clear, unmistakable, unquestionable, plain, transparent, manifest, incontrovertible, distinct, easy, determinable, bald, apparent, patent, unarguable.Open-eyed Synonyms : watchful.Open-faced Synonyms : frank.Open-minded Synonyms : receptive, unbiased, broadminded, amenable, tolerant, unprejudiced, impartial, undogmatic, reasonable, tractable.Openhanded Synonyms : generous, munificent, bountiful, charitable, lavish, ungrudging, unstinting, prodigal, liberal, magnanimous, extravagant, altruistic, princely, handsome.