fixe - frus
- fixed
- fixed idea
- fixed interval reinforcement
- fixed ratio reinforcement
- fixed sample
- fixed spasm
- fixed state
- fixed-action pattern
- fixed-alternative
- fixed-class society
- fixed-interval (schedule of) reinforcement
- fixed-interval (schedule of) reinforcement
- fixedness
- fixity
- flabbiness
- flabby
- flaccid
- flaccid paralysis
- flaccidity
- flagellation
