0
The opposite of soften is - harden
No, the word soften is a verb (soften, softens, softening, softened); to make something soft.
Noun forms for the verb to soften are softener, an agent used to soften; and the gerund softening, the act of making soft.
The past tense of soften is softened.
Mainly to prevent wrinkling and soften clothes
simplySmart lotion soften