Webster's Revised Unabridged Dictionary · 1913

Titivate

Titivate (tit"i*vāt) , verb, transitive and intransitive

[Formed from an uncertain source, in imitation of words in -ate from Latin]

To dress or smarten up; to spruce. [Both Humorous]
“Come here, an' let me titivate you.” He sat down beside her, and submitted to be dusted. — Quiller-Couch

Also: Tittivate