Here are the legitimate words that come from unscrambling INTERFILE, laid out in a clear format for easy reference.
Words You Can Make from INTERFILE
3-letter words
- EEL3
- EFT6
- ELF6
- ERE3
- ERN3
- ERT3
- FEE6
- FEN6
- FER6
- FET6
- FIE6
- FIL6
- FIN6
- FIR6
- FIT6
- IRE3
- LEE3
- LEI3
- LET3
- LIE3
- LIN3
- LIT3
- NEE3
- NET3
- NIL3
- NIT3
- REE3
- REF6
- REI3
- RET3
- RIF6
- RIN3
- TEE3
- TEL3
- TEN3
- TIE3
- TIL3
- TIN3
4-letter words
- ERNE4
- FEEL7
- FEER7
- FEET7
- FELT7
- FERE7
- FERN7
- FILE7
- FINE7
- FIRE7
- FIRN7
- FLEE7
- FLIT7
- FREE7
- FRET7
- FRIT7
- INTI4
- LEER4
- LEET4
- LEFT7
- LENT4
- LIEF7
- LIEN4
- LIFE7
- LIFT7
- LINE4
- LINT4
- LIRE4
- LITE4
- NITE4
- REEF7
- REEL4
- REFT7
- REIN4
- RENT4
- RETE4
- RIEL4
- RIFE7
- RIFT7
- RILE4
- RITE4
- TEEN4
- TERF7
- TERN4
- TIER4
- TILE4
- TINE4
- TIRE4
- TREE4
- TREF7
5-letter words
- ELFIN8
- ELITE5
- ENTER5
- FEINT8
- FILER8
- FILET8
- FINER8
- FLEER8
- FLEET8
- FLIER8
- FLINT8
- FLIRT8
- FLITE8
- INERT5
- INFER8
- INLET5
- INTEL5
- INTER5
- LIFER8
- LINER5
- LITER5
- LITRE5
- NITER5
- NITRE5
- REFIT8
- RELIT5
- RETIE5
- RIFLE8
- TILER5
- TREEN5
- TRINE5
6-letter words
- ENTIRE6
- FELINE9
- FERINE9
- FILTER9
- FINITE9
- INLIER6
- LEFTER9
- LEFTIE9
- LIEFER9
- LIERNE6
- LIFTER9
- LINTER6
- REFILE9
- REFINE9
- RELENT6
- RELIEF9
- RELINE6
- TELFER9
- TINIER6
- TRIFLE9
7-letter words
- FERTILE10
- LINTIER7
- NIFTIER10
- NITRILE7
8-letter words
- FLINTIER11
9-letter words
- INFERTILE12
- INTERFILE12
Above is the full set of words you can make from INTERFILE through standard combinations. In total, the mix leads to 146 real words.