6-letter words with I as the 3rd letter and O as the 5th letter

The pattern is __I_O_: PRISON, EDITOR, POISON, SAILOR, and TAILOR all fit. Nine of the 81 matches rank among the top 25,000 English words by frequency, so familiar answers share space with obscure tournament entries. The dictionary split matters too: 75 appear in Collins, while 57 appear in NWL2023.

The pattern at a glance

• 81 entries match the fixed I-third, O-fifth pattern.
• Only 9 meet our common-word frequency threshold.
• PRISON, EDITOR, and POISON are recognizable examples.
• PHIZOG tops the Scrabble scoring list at 21 points.

Which letters most often frame the pattern?

S leads the starting letters with 12 matches, followed by T with 11 and C with 9. Those are useful first-position filters when you have another crossing letter; don't assume the pattern begins with I just because I is fixed in the middle.

At the other end, S closes 20 words and N closes 19, well ahead of R at 12. PRISON, POISON, and UNISON show the strong -ISON family, while EDITOR, SAILOR, and TAILOR make -OR another visible route. The endings are more concentrated than the openings.

The dictionary counts overlap: Collins has 75 matches, ENABLE 52, and NWL2023 57. The total is not the sum of those lists. Check the word list used in your game before committing an unfamiliar entry.

S and N together account for 39 words, but 42 end in other letters. Keep R and T in play when crossings rule out the leaders; treating S or N as a required ending would miss many matches.

How should you narrow the candidates?

For 6-letter words with I as the 3rd letter and O as the 5th letter, preserve the two confirmed tiles and test the remaining slots by endings. Start with S or N at the end, then see whether the board supports -ISON or -OR. This narrows candidates without wasting guesses on the fixed vowels.

Score play changes the shortlist. PHIZOG scores 21, ahead of EPIZOA and QUIPOS at 17; familiar words like PRISON are easier to recognize, but the unusual scorer carries the point advantage. The mean score is 10.2, so PHIZOG is an outlier rather than a typical result.