01 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 mor…
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1.
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. See: Shall
Syn.
See Ought.