letted sunshine in (verb) enliven: inspire, vitalize
Sinonime: ad-lib, extemporaneous, improv, improvised, improviso, off-hand, played by ear, shot from the hip, spontaneous, spur-of-the-moment, unpremeditated, unprepared, unrehearsed, unscripted, whipped up,
winged*
Antonime: bore,
dull,
enervate,
exhaust,
fatigue,
subdue, tire