rock hard

adjective

As tough, hard, or inflexible as a piece of rock.

Similar

Meanings

adjectiverock hard (not comparable)

alternative rock-hard · alternative rockhard

  1. not comparableAs tough, hard, or inflexible as a piece of rock.

    One of humankind's oldest maladies, kidney stones are rock-hard

    1998, Jean Carper, Food - Your Miracle Medicine, page 192
    1 more example

    You are not using the frosting as a glue, as in making a gingerbread house, so it is not necessary that it dry rock hard.

    2007, Meaghan Mountford, Cookie Sensations: Creative Designs for Every Occasion, page 25

    Synonyms: rock solid

  2. not comparablebodybuildingWith muscles developed and toned to a high degree, especially the muscles of the abdomen.

    Workout complete – Miles body was rock hard.

    2010, Andre Maxwell Jacob, And Then There Was Life!, page 229
    1 more example

    He was pale but rock-hard from exercise, and still had a grunt's haircut.

    2007-2008, quoted in Best Newspaper Writing, 2007-2008, page 367
  3. figurativelynot comparableHaving a very fully erect and stiff penis

    He is rock hard as he mounts her.

    2010, Devon Scott, Unfaithful, page 142
    1 more example

    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.

    2008, Eden Bradley, Forbidden Fruit, page 112
  4. figurativelynot comparableWith 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.

    2010, Richard House, Del Loewenthal, Childhood, Well-Being and Therapeutic Ethos, page 96

Synonyms & antonyms

adjectiveAs tough, hard, or inflexible as a piece of rock.

Similar

Translations

Chinese Mandarin 石更
  • 石更 (shígèng)of penis
Finnish kivikova, kivikova
  • kivikovahard like rock
  • kivikovaof muscles
Spanish como piedra, como peña
  • como piedrahard like rock
  • como peñahard like rock
  • durísimoof muscles
  • durísimoof penis
  • como fierroof penis
  • fundamentalistaof strong beliefs
Swedish stenhård
  • stenhårdhard like rock
Cite this entry
APA

rock hard. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/rock%20hard

MLA

“rock hard.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/rock%20hard. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “rock hard,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/rock%20hard.

Source: rock hard on Wiktionary, CC BY-SA 4.0.