Chapter Oaf to Obscure of O by Soule's Synonymes

3. Underhand.

4. Envious, unpropitious, malignant, sinister, bad.

5. Collateral, indirect.

Obliterate, v. a.

1. Efface, erase, expunge, cancel, rub out, rub off, blot out, scratch out, wipe out, strike out.

2. Wear out, destroy.

Obliteration, n. Effacement, erasure, extinction, blotting out.

Oblivion, n.

1. Forgetfulness (Oblivion refers especially to the thing forgotten).

2. Amnesty, general pardon.

Oblivious, a. Forgetful, mindless, heedless, careless, negligent, neglectful.

Obloquy, n. Reproach, detraction, odium, censure, blame, calumny, contumely, slander, defamation, backbiting, traducing, aspersion, reviling.

Obnoxious, a.

1. Reprehensible, censurable, blameworthy, faulty.

2. Hateful, unpleasing, odious, offensive, unpopular.

3. Subject, liable, answerable, exposed (with to), amenable.

Oboe, n. Hautboy.

Obscene, a.

1. Indecent, indelicate, immodest, impure, ribald, gross, coarse, broad, unchaste, lewd, loose, smutty, offensive, shameless, filthy.

2. Dirty, filthy, foul, offensive, disgusting.

3. Inauspicious, ill-omened, ill-boding.