meaning: rich, plentiful
余裕 == yoyuu == (noun) surplus, composure, margin, room, time, allowance, scope, rope
Left radical is a radical form of 'clothing' (衣).
Right radical is 'valley' (谷), which here acts phonetically to express
'ample'. 'Ample clothes' later came to mean 'ample' in general.
suggests as a
mnemonic: 'Plentiful clothes, enough to fill valley.'