What are the best answers for “set in a rigidly conventional pattern of behavior, habits, or beliefs”?

fossilised, fossilized, ossified.

How many letters does the top answer for “set in a rigidly conventional pattern of behavior, habits, or beliefs” have?

The most common answer is fossilised (10 letters).

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

fossilised 10 letters wn-def

set in a rigidly conventional pattern of behavior, habits, or beliefs

fossilized 10 letters wn-def

set in a rigidly conventional pattern of behavior, habits, or beliefs

ossified 8 letters wn-def

set in a rigidly conventional pattern of behavior, habits, or beliefs