green-light

Verb

greenlight (third-person singular simple present greenlights, present participle greenlighting, simple past and past participle greenlighted or greenlit)

1. (idiomatic, informal, transitive) To approve; to permit to proceed.
   • Labour's Shadow Chancellor Anneliese Dodds hit back at Sunak and said that his failure to greenlight major projects such as Northern Powerhouse Rail showed that government claims of levelling up the country were "not supported by the evidence".2020 December 2, Paul Stephen, “Network News: Sunak focuses on jobs, infrastructure and 'levelling up'”, in Rail, page 7

   Synonyms:

   allow, approve, give the go-ahead, give the green light, permit, rubber stamp, wave through

2. (idiomatic, slang, transitive) To approve or requisition the harming or death of; to put a hit out on.