keen witted (adjective) sprightly: fun, vivacious
Sinonime: beginning, blossoming, burgeoning, bursting forth, embryonic,
fledgling,
fresh, germinal, germinating, growing,
incipient, maturing, nascent,
opening,
potential,
promising, pubescent, pullulating, shooting up, sprouting, vegetating, young
Antonime: dying, shrinking, withering