instance — a case or occurrence of anything: fresh instances of oppression.
instant — an infinitesimal or very short space of time; a moment: They arrived not an instant too soon.
juncture — a point of time, especially one made critical or important by a concurrence of circumstances: At this juncture, we must decide whether to stay or to walk out.
lifetime — the time that the life of someone or something continues; the term of a life: peace within our lifetime.
shift — to put (something) aside and replace it by another or others; change or exchange: to shift friends; to shift ideas.
spell — a continuous course or period of work or other activity: to take a spell at the wheel.
stint — to be frugal; get along on a scanty allowance: Don't stint on the food. They stinted for years in order to save money.
tempo — Music. relative rapidity or rate of movement, usually indicated by such terms as adagio, allegro, etc., or by reference to the metronome.
tide — the periodic rise and fall of the waters of the ocean and its inlets, produced by the attraction of the moon and sun, and occurring about every 12 hours.
tour — Georges de [zhawrzh duh] /ʒɔrʒ də/ (Show IPA), 1593–1652, French painter.
life span — the longest period over which the life of any organism or species may extend, according to the available biological knowledge concerning it.
