What are the best answers for “having been rendered unsusceptible to a disease”?

immunised, immunized, vaccinated.

How many letters does the top answer for “having been rendered unsusceptible to a disease” have?

The most common answer is immunised (9 letters).

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

immunised 9 letters wn-def

having been rendered unsusceptible to a disease

immunized 9 letters wn-def

having been rendered unsusceptible to a disease

vaccinated 10 letters wn-def

having been rendered unsusceptible to a disease