prime directive
originally US
noun
A chief objective, goal, or requirement; a guiding principle (in later use popularized especially by the U.S. science fiction television series Star Trek as a law prohibiting interference with less developed planets and cultures).
Origin
1940s; earliest use found in The Washington Post.
- run against
- runagate
- run along
- run a mile
- run-and-gun
- run-and-shoot
- run an errand
- runanga
- runaround
- run around with (also run with)
- run at
- run a temperature
- runathon
- run-a-thon
- run a tight ship
- run away
- runaway
- runaway knock
- runaway reaction
- runaway ring
- runaway selection
- runaway star
- runaway switch
- runaway train
- run away with