-fy

CIDE DICTIONARY

-fy,  [Through French verbs in -fier, L. -ficare, akin to facere to do, make. See Fact.].

 A suffix signifying to make, to form into, etc.; as, acetify, amplify, dandify, Frenchify, etc.  [1913 Webster]

OXFORD DICTIONARY

-fy, suffix forming:
1 verbs from nouns, meaning: a make, produce (pacify; satisfy). b make into (deify; petrify).
2 verbs from adjectives, meaning 'bring or come into such a state' (Frenchify; solidify).
3 verbs in causative sense (horrify; stupefy).

Etymology

from or after F -fier f. L -ficare, -facere f. facere do, make