metal is related to hard
rock is related to hard
adamas is related to hard
艰苦 is related to hard
艱苦 is related to hard
stone is related to hard
steel is related to hard
bone is related to hard
hard is an antonym of bearable
hard is an antonym of easy
soft is an antonym of hard
The word "hard as nails" is derived from "hard"
The word "hard disc" is derived from "hard"
The word "hard disk" is derived from "hard"
The word "hard" etymologically comes from the word "hurd"
The word "hardhead" etymologically comes from the word "hard"
The word "hardpacked" etymologically comes from the word "hard"
The word "hardpoint" etymologically comes from the word "hard"
The word "hardtail" etymologically comes from the word "hard"
The word "semihard" etymologically comes from the word "hard"
The word "standard" etymologically comes from the word "hard"
The word "superhard" etymologically comes from the word "hard"
The word "hardir" etymologically comes from the word "hard"
Creative Commons - some rights reserved