appobation
official approval/support/praise
crestfallen
completely discouraged, disappointed
enthralled
completely captivated, enchanted, charmed
feasible
capable of being done, practical, possible
insinuate
suggest or hint indirectly and upleasantly
jovial
having a hearty humor and good cheer, merry
laconic
using very few words, brief, to the point
mercurial
quickly changing, moody
remiss
negligent, careless, forgetful of one's duties
stolid
not showing much emotion, calm, dependable