knowing what makes someone tick (verb) have someone's number: know someone's motives
Sinonime: at a premium, deficient,
failing,
few, few and far between, in short supply, limited,
occasional,
rare, scant,
scanty,
seldom, seldom met with, semioccasional,
short, shortened,
shy,
sparse,
sporadic, truncated,
uncommon,
unusual,
wantingAntonime: abundant,
frequent,
plentiful,
sufficient