Past tense of "greenlight" [closed]

Both are in use, with greenlit being slightly more common than greenlighted according to COCA (32 vs 21 hits).

See for yourself by searching for greenli*.

Probably is "Greenlighted"

reference: So far three directors have greenlighted the project.

This meaning is based on one submitted to the Open Dictionary by: Boris Marchenko from Russian Federation on 30/08/2015

Either use is acceptable: TFD

tr.v. greenlighted or greenlit

As in:

"[He] commissioned the pilot that became 'Captain Kangaroo' and greenlighted the series" (Variety).

or

1992 Premiere Feb. 47/2 There he green-lit both The Silence of the Lambs and The Addams Family.

According to Wiktionary, both are acceptable: greenlight.

Google n-grams shows that by 2008 (when the data ends), greenlighted was used about 2.3 times as often as greenlit.