7-letter words with I as the 1st letter and X as the 5th letter

This fixed-letter pattern produces a compact set: all 11 words start with I and put X in the fifth position. Familiar forms such as INDEXED, INDEXES, and INBOXES sit beside less familiar entries like INDOXYL and INVEXED. Only two words are common by the frequency measure, so expect a mix of recognizable vocabulary and specialist plays.

The I-and-X pattern at a glance

• Eleven tournament-dictionary words match; each begins with I and places X fifth.
• Only two entries fall among the top 25,000 English words by word frequency.
• Collins accepts 10 matches, NWL2023 accepts 9, and ENABLE accepts 8.
• IMMIXED leads the Scrabble scores at 19; INFIXED, IMMIXES, INDOXYL, and INVEXED each score 18.
• Four words end in D and four end in S; the other three end in L or R.

Which words are easiest to recognize?

The INDEX family gives this pattern its most familiar cluster: INDEXED, INDEXES, INDEXER, and INDEXAL all fit the seven-letter shape. INBOXES is another recognizable option. These examples share the required I-start and fifth-letter X, but their endings vary, so check every tile position rather than relying on a familiar prefix.

The less familiar end of the set includes INFIXES, INFIXED, IMMIXED, IMMIXES, INDOXYL, and INVEXED. Eight of the 11 entries have definitions, but recognition alone does not settle a challenge: dictionary coverage differs, with Collins including more matches than either NWL2023 or ENABLE.

How to use the I-first, X-fifth pattern

The endings divide neatly: D and S account for eight entries together, while L and R cover the remaining three. That split is a practical scan aid when you have both fixed letters and a likely final tile. Start with the four D-ending forms or the four S-ending forms, then test the less common endings.

For a score-focused play, IMMIXED is the standout at 19 points, one point ahead of the four 18-point words. The average score is 16.8, so this is a strong-scoring group overall. Still, the top score is not a promise of a playable word: confirm the spelling and your game’s dictionary before committing, especially for the rarer forms.