Dictionary.com
definitions
  • synonyms

hard-on

[hahrd-on, -awn]
See more synonyms for hard-on on Thesaurus.com
noun, plural hard-ons. Slang: Vulgar.
  1. an erection of the penis.
Show More

Origin of hard-on

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for hard on

n.

"penile erection," 1893, from hard + on.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with hard on

hard on

1

Also, hard upon, hard by. In close proximity, as in The police were hard on the heels of the thieves, or It was hard upon three o'clock, or Their house is hard by ours. The variants are used less than hard on. [Second half of 1700s]

Show More

2

be hard on. Deal severely with, cause damage to. For example, He asked the teacher not to be too hard on those who forgot the assignment, or That cat has really been hard on the upholstery. [Second half of 1600s] Also see hard time, def. 2.

Show More
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.