diagnostic

mastery
UK /daɪ.əɡˈnɒs.tɪk/ US /ˌdaɪ.əɡˈnɑ.stɪk/adjnoun

card 1 of 7 · synonym

Which word is closest in meaning to 'diagnostic' in this sentence?

The patient's persistent fever and distinctive rash are diagnostic of scarlet fever.