guileful

== English == === Alternative forms === guilefull (archaic) === Etymology === From Middle English gileful, gilful, equivalent to guile +‎ -ful. === Pronunciation === === Adjective === guileful (comparative more guileful, superlative most guileful) Full of guile; treacherously deceptive. Synonyms: guiled, ratlike, viperous; see also Thesaurus:deceptive, Thesaurus:treacherous ==== Derived terms ==== ==== Translations ====