oil-producing, a. oleiferous.
oilstone, n. [hone].
oily, a. unctuous, oleaginous, emulsive, lubricous; [glib], [fluent], [plausible].
ointment, n. unguent, embrocation, [salve].
old, a. aged, elderly, senescent, decrepit, venerable, patriarchal, superannuated, [senile]; [former], pre-existing, [preceding], [ancient], archaic, [antique], [antiquated], olden, time-honored, traditional, immemorial, [primitive], primordial, primeval, pristine, [fossil]; [dilapidated], [decayed], [effete]; practiced, veteran, [experienced]; [sensible], astute, [shrewd], [sagacious].
old age. [senility], [dotage], superannuation, decrepitude. Associated words: geratology, geratic, gerontic.
old-fashioned, a. [antiquated], archaic, passé, [antique], [obsolete], fogram, frumpish.
old-fashioned word. archaism.
old [iron], [glass], etc. junk.
old maid. spinster.