Standard Lemma guide

insanely

adv · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ɪnˈseɪnli/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

adv

Meaning 1

In an insane manner; not sanely.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adv

Meaning 2

To a great degree; very much.

Definition source: English Wiktionary via Wiktextract

Examples

  • That ramp is insanely difficult to jump.
  • Disney has some insanely fun roller coasters.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adverb

Meaning 3

(used as intensives) extremely

Definition source: Princeton WordNet 3.0

Examples

  • she was madly in love
  • deadly dull
  • deadly earnest
  • deucedly clever
  • insanely jealous

Meaning relationships

Synonyms: madly, deadly, deucedly, devilishly

Antonyms: none provided

4

adverb

Meaning 4

in an insane manner

Definition source: Princeton WordNet 3.0

Examples

  • she behaved insanely
  • he behaves crazily when he is off his medication
  • the witch cackled madly
  • screaming dementedly

Meaning relationships

Synonyms: crazily, dementedly, madly

Antonyms: sanely

History

Etymology

Etymology tree English insane Middle English -ly English -ly English insanely From insane + -ly.

Across languages

Translations

14 source translations are retained for this English entry.

  • Finnish: mielenvikaisesti — in an insane manner
  • Finnish: hullusti — in an insane manner
  • French: insensément — in an insane manner
  • German: wahnsinnig — in an insane manner
  • Ingrian: hullust — in an insane manner
  • Italian: terribilmente — in an insane manner
  • Italian: follemente — in an insane manner
  • Italian: assurdamente — in an insane manner
  • Italian: insensatamente — in an insane manner
  • Latin: dēmenter — in an insane manner
  • Portuguese: insanamente — in an insane manner
  • Spanish: insensatamente — in an insane manner
  • Swedish: vansinnigt — in an insane manner
  • Turkish: delicesine — in an insane manner