Juvenile
adult, aged, mature, experienced
Devour
nibble, save, ignore, regurgitate
Rebuff
accept, welcome, encourage, approve
Ingenious
unimaginative, uninventive, unoriginal, dull
Magnify
minimize, understate, dampen, de-emphasise
Flounder
stride, flourish, excel, glide
Generous
stingy, meagre, selfish, greedy
Scour
dirty, ignore, overlook, pollute
Fiddle
steady, focus, rigid, fix
Solitary
sociable, social, public, accompanied
Treachery
loyalty, honesty, devotion, duty
Contemporary
ancient, non-simultaneous, traditional, old-fashioned
Capacious
narrow, limited, shallow, crowded
Indolent
hard-working, active, ambitious, rapid
Abandon
stay, maintain, retrieve, self-control