noun
- mistake
- error
- defect
- flaw
- demerit
- faulting
- geological fault
- shift
- fracture
- break
- breakdown
- cleft
- crack
- crevice
- equipment failure
- fissure
- imperfection
- imperfectness
- nonaccomplishment
- nonachievement
- responsibility
- responsibleness
- scissure
- serve
- service
- worth
antonyms
verb
antonyms
sounds kind of like
- fabled
- failed
- fall out
- fallot
- fallout
- fauld
- faulty
- faveolate
- fealty
- feel out
- felid
- felidae
- fellata
- fellate
- fellatio
- felt
- felt hat
- felted
- field
- field day
- field hut
- file out
- filet
- filial duty
- filiate
- fill out
- filled
- fillet
- filth
- filthy
- five-fold
- fivefold
- flat
- flat out
- flat-hat
- flathead
- flawed
- fleet
- flit
- float
- floaty
- flood
- flood out
- flood tide
- flooded
- floodhead
- flout
- flow out
- fluid
- fluidity
- flute
- foaled
- foiled
- folate
- fold
- foldaway
- foldout
- foliate
- foliated
- foliolate
- follow out
- foul out
- fouled
- fueled