n. 25B6; adjective a long silence : LENGTHY, extended, prolonged, extensive, protracted, long-lasting, long-drawn(-out), spun out, dragged out, seemingly endless, lingering, interminable.
short, brief.
25A0; before long SOON, shortly, presently, in the near future, in a little while, by and by, in a minute, in a moment, in a second; informal anon, in a jiffy; Brit. informal in a tick, in two ticks, in a mo; dated directly; poetic/literary ere long.