Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

135} timeliness, occasion, opportunity, opening, room; event (eventuality) 151; suitable season, proper season, suitable time, proper time; high time; opportuneness &c adj.; tempestivity†. crisis, turn, juncture, conjuncture; crisis, turning point, given time. nick of time; golden opportunity, well timed opportunity, fine opportunity, favorable opportunity, opening; clear stage, fair field; mollia tempora [Lat.]; fata Morgana [Lat.]; spare time &c (leisure) 685. V. seize an opportunity &c (take) 789, use an opportunity &c 677, give an opportunity &c 784, use an occasion; improve the occasion. suit the occasion &c (be expedient) 646. seize the occasion, strike while the iron is hot, battre le fer sur l'enclume [Fr.], make hay while the sun shines, seize the present hour, take time by the forelock, prendre la balle au bond [Fr.]. Adj. opportune, timely, well-timed, timeful†, seasonable. providential, lucky, fortunate, happy, favorable, propitious, auspicious, critical; suitable &c 23; obiter dicta. Adv. opportunely &c adj.; in proper course, in due course, in proper season, in due season, in proper time, in due time; for the nonce; in the nick of time, in the fullness of time; all in good time; just in time, at the eleventh hour, now or never. by the way, by the by; en passant [Fr.], a propos [Fr.]; pro re nata [Lat.], pro hac vice [Lat.]; par parenthese [Fr.], parenthetically, by way of parenthesis, incidentally; while speaking of, while on the subject; extempore; on the spur of the moment, on the spur of the occasion; on the spot &c (early) 132. Phr. carpe diem [Lat.], [Horace]; occasionem cognosce [Lat.]; one's hour is come, the time is up; that reminds me, now that you mention it, come to think of it; bien perdu bien connu [Fr.]; e sempre l'ora [It]; ex quovis ligno non fit Mercurius [Lat.]; nosce tempus [Lat.]; nunc aut nunquam [Lat.].