officer, n. [office-holder], magistrate, dignitary, [incumbent].
officially, adv. ex-officio.
officious, a. [meddlesome], [intrusive], [obtrusive], pragmatical, [impertinent].
offscouring, n. [refuse], [scum], offscum, recrement, [dross], [trash], [waste].
offset, n. [set-off], [counterbalance], [equivalent].--v. [counterbalance], [counterpoise].
offshoot, n. [scion], [branch].
offspring, n. [children], [issue], progeny, posterity, [descendants].
often, adv. frequently, repeatedly, oftentimes, ofttimes. Antonyms: [seldom], infrequently.
oil, v. lubricate.
oiliness, n. lubricity, unctuousness, unctuosity, oleosity, glibness.