extremely

adverb

ex·​treme·​ly ik-ˈstrēm-lē 

1

: in an extreme manner

2

: to an extreme extent

Synonyms of extremely

• very
• incredibly
• terribly
• highly
• too
• so
• badly
• damned
• severely
• damn
• really
• super
• desperately
• intensely
• seriously
• far
• exceptionally

Examples of extremely in a Sentence

an extremely hot day

Recent Examples on the Web

Now the molecule was DMT, which causes an extremely intense but relatively short trip. —Clayton Dalton, New Yorker, 13 Mar. 2026

The researchers also say the laser could benefit industries that depend on nanoelectronics, including semiconductor manufacturing, by helping engineers detect extremely small defects in chips. —Neetika Walter, Interesting Engineering, 12 Mar. 2026

The gaps between the tracks are extremely short and sometimes nonexistent, which reinforces the similarities between them and lends a suite-like unity. —Mark Richardson, Pitchfork, 12 Mar. 2026

Don't forget to check on them during extremely hot weather—even drought-tolerant varieties may need more water when housed in terracotta during the summer. —Alexandra Kelly, Martha Stewart, 12 Mar. 2026

Word History

First Known Use

1509, in the meaning defined at sense 1

Phrases Containing extremely

• extremely high frequency
• extremely low frequency

Rhymes for extremely

• seemly
• unseemly