on the QT vs on the Q.T.

on the QT and on the Q.T. both are adverbs.

Word	Noun	Adjective	Verb	Adverb
on the QT	No	No	No	Yes
on the Q.T.	No	No	No	Yes

As adverbs, on the QT and on the Q.T. are synonyms defined as:

Other synonyms of on the QT include in secret, secretly.

on the QT (adverb)	on the Q.T. (adverb)
in secrecy; not openly	in secrecy; not openly