| next(adverb, near, touching, forward, supported) |
| notwithstanding(near, pro, to, after, for) |
| obedient(adjective, shy, meek, docile) |
| obeisant(adjective, shy, meek, docile, obedient) |
| obliging(preposition, near, approaching, to) |
| obsequious(adjective, shy, meek, docile, obedient) |
| of assistance(expression, adjective, good, useful, valuable) |
| of service(expression, adjective, good, valuable, practical) |
| of use(expression, adjective, good, useful, valuable) |
| on route to(expression, idiom) |
| on the part of(expression, idiom, near, to, after) |
| on the side of(expression, idiom, near, to, after) |
| on the subject of(expression, idiom, preposition, for) |
| on top of(expression, idiom, adverb, near, touching) |
| oncoming |
| onto(adjective, beneficial, to, all-purpose) |
| opposite |
| orderly(adjective, shy, meek, docile, obedient) |
| over(adverb, near, touching, forward, supported) |
| passive(adjective, shy, meek, docile, obedient) |