Definition of immense

< immemorial

immensity >

im·mense    (-mns) KEY 

ADJECTIVE:

1. Extremely large; huge.
2. Of boundless or immeasurable size or extent. See Synonyms at enormous.
3. Informal Surpassingly good; excellent.

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ETYMOLOGY:
Middle English, from Old French, from Latin immnsus : in-, not ; see in-¹ + mnsus, past participle of mtr, to measure; see m-² in Indo-European roots

OTHER FORMS:
im·mensely(Adverb), im·menseness(Noun)