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7-letter words with I as the 1st letter and U as the 6th letter

Seven-letter words starting with I and placing U sixth total 16, including IMPETUS, ISTHMUS and INUKSUK.

16 wordsTop pick IMPETUSHighest score INUKSUK 15

1 of 16 are everyday words (6%). Mostly rare words: great for Scrabble, tough for daily puzzles.

With I in 1st place, E is the most common 6th letter (189 words). The bar under each letter shows the size of its list.

  • Length
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15

Best words to play first 16 · most-used first

  • IMPETUS11
  • ISTHMUS12
  • IGNEOUS8
  • IRIDIUM10
  • INCUBUS11
  • INGROUP10
  • INGENUE8
  • IMPIOUS11
  • ICTERUS9
  • ISCHIUM14
  • INFIMUM14
  • ILIACUS9
  • INUKSUK15
  • INGENUS8
  • IDEATUM10
  • INVIOUS10
All valid words 16

A to Z. Includes rare and Collins-only words. Linked tiles open the word's meaning, score and rhymes.

  • ICTERUS9
  • IDEATUM10
  • IGNEOUS8
  • ILIACUS9
  • IMPETUS11
  • IMPIOUS11
  • INCUBUS11
  • INFIMUM14
  • INGENUE8
  • INGENUS8
  • INGROUP10
  • INUKSUK15
  • INVIOUS10
  • IRIDIUM10
  • ISCHIUM14
  • ISTHMUS12
Letters by positionIn 56% of these words the 7th letter is S.
2nd letter
  1. N44%
  2. M13%
  3. S13%
3rd letter
  1. G19%
  2. T13%
  3. P13%
4th letter
  1. E31%
  2. I19%
  3. H13%
5th letter
  1. O25%
  2. T13%
  3. N13%
7th letter
  1. S56%
  2. M25%
  3. E6%

Highest-scoring words

Scrabble and Words With Friends points, before board bonuses
WordScrabbleWords With FriendsDictionaries
INUKSUK1518NWL only
ISCHIUM1416All three
INFIMUM1418Collins only
ISTHMUS1213All three
IMPETUS1114All three
INCUBUS1116All three
IMPIOUS1114All three
IRIDIUM1012All three
INGROUP1014All three
IDEATUM1012Collins only
INVIOUS1013Collins only
ICTERUS911All three

Only 16 matches put U in the sixth slot after an opening I, and just one falls within the common-word group. IMPETUS, ISTHMUS and IRIDIUM are among the more recognisable entries; INUKSUK is the top scorer at 15 points. Most options are specialist, so this is a clue-driven shortlist rather than a set of safe everyday guesses.

At a glance for this letter frame

  • 16 words meet the I-first, U-sixth frame.
  • Nine entries end in S.
  • INUKSUK leads at 15 points.
  • Only one match meets the common group.

Which words fit this letter frame?

The final S dominates: nine of the 16 matches end there, including IMPETUS, ISTHMUS, IGNEOUS, INCUBUS and IMPIOUS. Four end in M; E, K and P appear once apiece. That makes the last tile a useful second filter, especially if your clue has both the sixth U and a likely plural-looking ending.

How can you narrow the remaining tiles?

The score list favors unusual letter patterns. INUKSUK reaches 15, ISCHIUM and INFIMUM each score 14, and ISTHMUS and IMPETUS score 12 and 11 respectively. Familiarity is limited: the common-word count is one, so check your game’s word list before relying on a technical candidate.

The lone common-group entry means specialist vocabulary is not a side issue here. IMPETUS and ISTHMUS are recognizable anchors, but a plausible spelling still needs to match the sixth tile and the game lexicon.

This list has a clear split between familiar anchors and obscure scoring candidates. IMPETUS and ISTHMUS are easier to recognize, while INUKSUK heads the score table; matching the known letters should come before choosing on score alone.

The score leaders offer a useful contrast between high tile value and everyday recognition. Check INUKSUK against the exact pattern first, then compare more familiar choices such as IMPETUS or ISTHMUS against your board and rack.

The score leaders offer a useful contrast between tile value and everyday recognition. Check INUKSUK against the exact pattern first, then compare familiar choices such as IMPETUS or ISTHMUS against your board and rack.

A practical clue check

Tip

Start with the nine S-ending forms if your final tile is known; that branch alone contains more than half the pattern’s 16 entries.

Questions people ask

How many seven-letter words have U sixth and I first?
Sixteen words match. IMPETUS, ISTHMUS, IGNEOUS and IRIDIUM are among the clearer examples, while INUKSUK is the top scorer at 15 points. The U belongs in position six, not at the word’s end.
Which ending is most common?
S closes nine of the 16 matches. M is next with four, while E, K and P appear once each at the end. The U belongs in position six, not at the word’s end.
Is this a common word pattern?
No: only one entry falls within the common-word group used for these lists. IMPETUS and ISTHMUS are more familiar than specialist forms such as ISCHIUM or INUKSUK. The U belongs in position six, not at the word’s end.

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