"cuddlesome, given to or inviting cuddles," 1863, from cuddle + -y (2).
Entries linking to cuddly
cuddle v.
"hug, embrace so as to keep warm; lie close or snug," 1520s (implied in cudlyng), of uncertain origin. OED calls it "A dialectal or nursery word." Perhaps a variant or frequentative form of obsolete cull, coll "to embrace" (see collar (n.)); or perhaps from Middle English *couthelen, from couth "known," hence "comfortable with." It has a spotty early history and seems to have been a nursery word at first. Related: Cuddled; cuddling. As a noun, "a hug, an embrace," by 1825.
-y 2
adjective suffix, "full of or characterized by," from Old English -ig, from Proto-Germanic *-iga- (source also of Dutch, Danish, German -ig, Gothic -egs), from PIE -(i)ko-, adjectival suffix, cognate with elements in Greek -ikos, Latin -icus (see -ic). Originally added to nouns in Old English; used from 13c. with verbs, and by 15c. even with other adjectives (for example crispy). Adjectives such as hugy, vasty are artificial words that exist for the sake of poetical metrics.