rock hard

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rock hard

adjective rock-hard · rockhard

not comparable As tough, hard, or inflexible as a piece of rock. One of humankind's oldest maladies, kidney stones are rock-hard
Similar: rock solid
not comparable With muscles developed and toned to a high degree, especially the muscles of the abdomen. He was pale but rock-hard from exercise, and still had a grunt's haircut.
figuratively, not comparable Having a very fully erect and stiff penis Tommy Lee first shivered when he felt the tongue in his ear, but his whole body shuddered when he felt the deputy's rock hard cock press along the length of his ass crack.
figuratively, not comparable With strongly held beliefs and opinions, deep conviction. Mark does not seem to be suffering from any inner conflict, in that he is rock hard and will not budge from this position.

Opposite: flaccid, soft, limp

Thesaurus

adjective

Opposite: flaccid, soft, limp

Translations

Every language

adj hard like rock

Español	como piedra, como peña

adj of muscles

Español	durísimo

adj of penis

Español	durísimo, como fierro
中文	石更 shígèng

adj of strong beliefs

Español	fundamentalista

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MLA

"rock hard." Wiktionary, via Micwyn, micwyn.com/word/rock%20hard. Accessed 6 Nov. 2026.

APA

rock hard. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/rock%20hard

Chicago

"rock hard." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/rock%20hard.

BibTeX

@misc{rock_hard_2026,
  title = {rock hard},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/rock%20hard},
  urldate = {2026-11-06}
}