past
tense
of.net
tense
of.net
Past tense of toughen
Simple past
- Toughened
Past participle
- Toughened
All forms of the verb toughen
| Infinitive | To toughen |
|---|---|
| Base form | Toughen |
| Present participle | Toughening |
| Past tense |
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| Past participle |
|
| Infinitive | To toughen |
|---|---|
| Base form | Toughen |
| Present participle | Toughening |
| Past tense |
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| Past participle |
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