6-letter words with F as the 4th letter and F as the 5th letter

The repeated F narrows the search to a compact set, but the final letter opens three distinct endings. Most entries finish with S, while a smaller group ends in Y or E. Dictionary coverage also varies: Collins accepts nearly the whole set, while NWL2023 and ENABLE include fewer entries, and the pattern is better for solving a fixed clue than for guessing an everyday word.

6-letter words with F as the 4th and 5th letter

• There are 59 tournament-dictionary entries with the pattern ___FF.
• CLIFFS, FLUFFY, STAFFS, and STUFFS are recognizable examples.
• The final letters are S for 36 words, Y for 16, and E for 7.
• WHIFFY, QUIFFS, and QUAFFS top the Scrabble scores at 21 points each.
• Only 4 entries rank among the common English words.

Which letters end these ___FF words?

S is the clear leader: 36 of the 59 words end in S. CLIFFS, STAFFS, and SNIFFS show how often the pattern forms a plural or verb ending, so an S in the final square is a strong fit when your crossing letters allow it.

Y comes next with 16 entries, including FLUFFY, STUFFY, and SPIFFY. Only 7 finish in E, such as BOUFFE and POUFFE. That small E group is easy to overlook when the familiar S and Y forms do not fit.

Which words score well, and where is the catch?

WHIFFY, QUIFFS, and QUAFFS each score 21 points in the Scrabble scoring. CHEFFY, CHAFFY, and CHUFFY follow at 20, while FLUFFY scores 18. The high values come from heavy letters such as W, Q, and Y; a strong rack score does not make an entry common.

Dictionary counts overlap: Collins includes 58 entries, NWL2023 includes 46, and ENABLE includes 41. That difference matters in tournament play, where a word accepted in one list can fail in another. With only 4 common entries, many matches are specialized; check your game's word list before building a play around an unfamiliar form.