| False | Hat.PreludeBuiltinTypes, Hat.PreludeBasic, Hat.Prelude |
| fatal | Hat.Hat |
| February | Hat.Time |
| FFExponent | Hat.PreludeBasic |
| FFFixed | Hat.PreludeBasic |
| FFFormat | Hat.PreludeBasic |
| FFGeneric | Hat.PreludeBasic |
| FilePath | Hat.PreludeBasic, Hat.Prelude, Hat.IO, Hat.System.IO |
| FinalQuote | Hat.Data.Char |
| Fixity | Hat.Hat |
| Float | Hat.Hat, Hat.PreludeBuiltinTypes, Hat.PreludeBasic, Hat.Prelude |
| Floating | Hat.PreludeBasic, Hat.Prelude |
| Format | Hat.Data.Char |
| Fractional | Hat.PreludeBasic, Hat.Prelude |
| Friday | Hat.Time |
| fromBool | Hat.PreludeBuiltinTypes |
| fromChar | Hat.Hat |
| fromDouble | Hat.Hat |
| fromExpList | Hat.Hat |
| fromFloat | Hat.Hat |
| fromFun | Hat.PreludeBuiltinTypes |
| fromId | Hat.Hat |
| fromInt | Hat.Hat |
| fromInteger | Hat.Hat |
| fromIO | Hat.Hat |
| fromIOError | Hat.PreludeBuiltinTypes |
| fromList | Hat.PreludeBuiltinTypes |
| fromLitString | Hat.Hat |
| fromString | Hat.PreludeBuiltinTypes |
| fromTuple0 | Hat.Hat |
| fromTuple2 | Hat.Hat |
| Fun | |
| 1 (Type/Class) | Hat.Hat, Hat.PreludeBuiltinTypes |
| 2 (Data Constructor) | Hat.Hat, Hat.PreludeBuiltinTypes |
| fun1 | Hat.Hat |
| fun10 | Hat.Hat |
| fun11 | Hat.Hat |
| fun12 | Hat.Hat |
| fun13 | Hat.Hat |
| fun14 | Hat.Hat |
| fun15 | Hat.Hat |
| fun2 | Hat.Hat |
| fun3 | Hat.Hat |
| fun4 | Hat.Hat |
| fun5 | Hat.Hat |
| fun6 | Hat.Hat |
| fun7 | Hat.Hat |
| fun8 | Hat.Hat |
| fun9 | Hat.Hat |
| Functor | Hat.PreludeBasic, Hat.Prelude, Hat.Monad, Hat.Control.Monad |