Enter a clue or pattern or both:
The Clue
"Thumbs-up" responses (4 letter answer)
The Answer
AOKS
Tags
Notes
The answer AOKS is rarely seen, appearing only about once every 1600 puzzles.
Related Clues
Informal approvals
NASA approvals
NASA nods
NASA green lights
Thumbs-up responses
"All systems go" signals
Astronauts' "All's-well" calls
Positive signs of life in outer space?