interest (desire to know about sth); interest (thing in which one is interested); hobby

excited; excitement; (physiology) excitation

mood; spirits; interest

to rise; to spring up; to burgeon; to be aroused; to come into vogue

stimulant; doping (in athletics)

happy; glad; willing (to do sth); in a cheerful mood

to spoil things; to dampen spirits; to feel deflated; to be dispirited

improvisation (in the arts); impromptu; extemporaneous

to enjoy oneself to the full; to one's heart's content

to revive; to rejuvenate