ac·​id·​head | \ ˈa-səd-ˌhed How to pronounce acidhead (audio) \

Definition of acidhead

: an individual who uses LSD

Examples of acidhead in a Sentence

Recent Examples on the Web With acidheads in the streets and upheaval in the studios, 1969 was a time of profound change not just in Hollywood, but in America at large. Alejandro De La Garza, Time, 26 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'acidhead.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of acidhead

1966, in the meaning defined above

History and Etymology for acidhead

acid entry 1 + -head (as in dopehead, hophead, pothead)

Learn More About acidhead

Time Traveler for acidhead

Time Traveler

The first known use of acidhead was in 1966

See more words from the same year

Dictionary Entries Near acidhead

acid halide


acid heat test

See More Nearby Entries 

Statistics for acidhead

Cite this Entry

“Acidhead.” Dictionary, Merriam-Webster, Accessed 9 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on acidhead

Thesaurus: All synonyms and antonyms for acidhead


Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!