NASA green lights (4 letters) — Crossword Helper

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The Clue

NASA green lights (4 letter answer)

The Answer

AOKS

Tags

all aok approval astronaut call green informal light nasa nod response signal system thumb well

Notes

The answer AOKS is rarely seen, appearing only about once every 1600 puzzles.

Related Clues

Informal approvals
NASA approvals
NASA nods
"Thumbs-up" responses
Thumbs-up responses
"All systems go" signals
Astronauts' "All's-well" calls