chop·fall·en /ˈʧɑpˌfɔlən/
(a.)下顎凹的
Chop·fall·en a. Having the lower chop or jaw depressed; hence, crestfallen; dejected; dispirited; downcast. See Chapfallen.
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chopfallen
adj : brought low in spirit; "left us fatigued and deflated
spiritually" [syn: chapfallen, crestfallen, deflated]