From neat + -ify.
neatify (third-person singular simple present neatifies, present participle neatifying, simple past and past participle neatified)
- (obsolete) To make neat or clean; to purify. [16th–17th c.]
1603, Michel de Montaigne, translated by John Florio, Essays, III.9:It is then no convenient time for a man to wash and netifie [translating decrasser] himselfe when he is assailed by a violent fever.