English
superhard
From super- + hard.
Proto-Germanic *harduz
Proto-West Germanic *hard(ī)
Old English heard ‘hard’
Middle English hard
English hard
Today it means
adj Having a very high hardness.
Sources
Sources: Wiktionary, “superhard”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / superhard