CHAPFALLEN
chapfallen, chopfallen, crestfallen, deflated
(adjective) brought low in spirit; “left us fatigued and deflated spiritually”
Source: WordNet® 3.1
Etymology
Adjective
chapfallen (comparative more chapfallen, superlative most chapfallen)
Crestfallen, dejected.
[…] he certainly sallied forth, after no very great interval, with an air quite desolate and chapfallen […]
Source: Wiktionary
Chap"fall`en, a.
Definition: Having the lower chap or jaw drooping, -- an indication of
humiliation and dejection; crestfallen; discouraged. See Chopfallen.
Source: Webster’s Unabridged Dictionary 1913 Edition