rock-hard

adjective

: very hard

Examples of rock-hard in a Sentence

Recent Examples on the Web

Besides the new material itself, another advantage is showing that molecular engineering can custom-build layered materials to combine features that used to be impossible to mix, like rock-hard strength and extreme heat insulation. — Mrigakshi Dixit, Interesting Engineering, 18 Sep. 2026

As space penetrates time, and time, rock-hard, penetrates space. — Sheila Heti, New Yorker, 26 July 2026

Tactics like using steroids and chewing rock-hard gum can cause physical harm to the mostly teenage boys who follow that particular trend. — Renée Onque, CNBC, 11 July 2026

The memory foam is supportive without feeling rock-hard, and the adjustable straps help keep everything in place even when turbulence hits. — Francesca Krempa, Travel + Leisure, 1 June 2026

Rhymes for rock-hard

• asgard
• backyard
• barnyard
• blackguard
• bombard
• brickyard
• canard
• churchyard
• coastguard
• courtyard
• debarred
• diehard