Definition

1. Adverb:
   • To an extreme degree; extremely: Used as an intensive to emphasize a quality, often one that is excessive or beyond normal limits.
   • In a manner characteristic of insanity; madly, crazily: Behaving or acting in a wild, irrational, or mentally unsound way.

Usage Examples

• As an intensive (extremely):
  • The new smartphone is insanely popular.
  • He was working at an insanely fast pace.
  • The concert tickets were insanely expensive.
• In the manner of insanity:
  • He began laughing insanely at the tragic news.
  • The villain in the movie cackled insanely as his plan unfolded.

Advanced Usage

• "insanely + adjective": A very common collocation where "insanely" intensifies a following adjective, often implying the degree is surprising or unreasonable.
  • The task was insanely difficult.
  • She is insanely talented.
• "insanely + adverb": Can also modify other adverbs, though less common.
  • The car accelerated insanely quickly.

Variants and Related Words

• Insane (adjective): Mentally deranged; utterly senseless.
  • It was an insane idea.
• Insanity (noun): The state of being seriously mentally ill; extreme foolishness or irrationality.
  • The defense pleaded insanity.

Synonyms

• Extremely, exceedingly, incredibly, wildly, madly, crazily, dementedly, deucedly, deadly (when used as an intensive).

Related Phrases

• "insanely jealous": Experiencing jealousy to an irrational or extreme degree.
  • He became insanely jealous when she spoke to another man.
• "laugh insanely": To laugh in a wild, uncontrolled manner suggestive of madness.
  • The character laughed insanely as the building collapsed.

Adverb

1. (used as intensives) extremely
   • she was madly in love
   • deadly dull
   • deadly earnest
   • deucedly clever
   • insanely jealous
2. in an insane manner
   • she behaved insanely
   • he behaves crazily when he is off his medication
   • the witch cackled madly
   • screaming dementedly