1786, "characterized by tricks," from trick (n.) + -y (2). Meaning "deceptively difficult" is from 1868. Related: Trickily; trickiness. Earlier was tricksy (1590s).
a tricky recipe to follow
tricky Dick
trichotillomania
trick
trickery
trickle
trickster
tricky
tricolor
tricot
tricuspid
tricycle
trident