/ ˈsɪmpə(r); NAmE / verb
to smile in a silly and annoying way :
[ v ]
a silly simpering girl
[ v speech ]
'You're such a darling,' she simpered.
► sim·per noun [ sing. ]
► sim·per·ing·ly / ˈsɪmpərɪŋli; NAmE / adverb
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WORD ORIGIN
mid 16th cent.: of unknown origin; compare with German zimpfer elegant, delicate.