How many letters does the top answer for “having achieved a comfortable relation with your environment” have?

The most common answer is familiarised (12 letters).

Crossword clue: having achieved a comfortable relation with your environment

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

familiarised 12 letters wn-def

having achieved a comfortable relation with your environment

familiarized 12 letters wn-def

having achieved a comfortable relation with your environment