Crossword clue

“Harden and become resistant to change”

This clue appeared as 52-Across in the NYT Crossword on Friday, December 26, 2025. The answer has 6 letters.

Answer · 6 lettersFirst appearance

OSSIFY

Letters6

Starts withO

Ends withY

Vowels2

Where this clue has appeared

NYT Crossword
Dec 26, 20256 letters→

About this clue

The clue “Harden and become resistant to change” ran in the NYT Crossword on December 26, 2025 as 52-Across. Its answer is a 6-letter word that starts with O and ends with Y.

See every answer from the puzzle on the NYT Crossword page for December 26, 2025, or learn how clues like this work in our guide to crossword clue types.

More clues from this puzzle

1ADawdler8 letters 9ACuts short6 letters 15ATypical sight in a bank robbery cartoon8 letters 16AKitsch6 letters 17ADoing some theater work8 letters 18ACracked wheat used in tabbouleh6 letters 19AOne whose beauty is on the inside5 letters 20AWhole kit and caboodle5 letters

FAQ

What is the answer to the “Harden and become resistant to change” clue?+

The answer is OSSIFY (6 letters), from the NYT Crossword of December 26, 2025.

Where has this clue appeared?+

We have seen it 1 time in the NYT Crossword.

How do I find other NYT Crossword answers?+

Open the full list of answers for December 26, 2025, or browse every date on the NYT Crossword hub.