| Should 1. (imp.) of Shall. 2. (imp.) Used as an auxiliary verb, to express a conditional or contingent act or state, or as a supposition of an actual fact; also, to express moral obligation (see Shall); e. g.: they should have come last week; if I should go; I should think you could go. Thesaurus Entries be expedient, be forced, be in for, be necessary, be obliged, cannot do otherwise, cannot help but, had best, had better, have got to, have need to, have to, must, need, need to, needs must, ought, ought to |