(linguistics) To derive a word from another word (of a differing part of speech) without modification; to perform zero derivation.

Third-person singular simple present indicative form of zero-derive

(history) Alternative letter-case form of zealot

(figuratively) great enthusiasm

To subject (a good) to no value-added tax when sold (but the supplier can still recover VAT attributable to it).

present participle of zero-rate

(military) Being or relating to a method whereby jet fighters and attack aircraft could be near-vertically launched using rocket motors to rapidly gain speed and altitude.

(vulgar, slang, US) Phrase used to emphasize that one does not care about something at all.

Synonym of tom-tit

plural of New Zealand tit