- -'d-'d1suffixcontraction1. had [I'd seen it before]2. would or should [we said we'd help]3. did [how'd you get here?]-'d2suffixcontraction var. of -ED useda) esp. in old poetry, to indicate a nonsyllabic ending [foster'd]b) to spell the inflected forms of some words, esp. initialisms [mascara'd, OD'd]
English World dictionary. V. Neufeldt. 2014.