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

In extremely dense fog, drivers are advised to turn on their hazard lights, pull over into a safe place, and if that’s on the side of the road or hard shoulder—turn off all lights except the hazards, engage the hand brake, and wait until the fog lifts. —Amanda Greenwood, MSNBC Newsweek, 6 Nov. 2025

In extremely dense fog where visibility is near zero, the best course of action is to first turn on your hazard lights, then simply pull into a safe location such as a parking lot of a local business, and stop. —Ca Weather Bot, Sacbee.com, 6 Nov. 2025

The extremely complex movement incorporates a special ruby duplex escapement and unites grande and petite sonnerie, alarm, and calendar functions. —Rachel Cormack, Robb Report, 5 Nov. 2025

Both were extremely philanthropic with not only their money but their time. —Lisa Lockwood, Footwear News, 5 Nov. 2025

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