Simple past tense and past participle of unclench.(verb)
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Use "unclenched" in a sentence
"Update: A number of BB readers who are non-LAT-subscribers have written in to say that the "unclenched" content is "re-clenched," and that they can't access without paid subscription."
"What age was your toddler when you "unclenched" a little bit about baby-proofing?"
"In an interview with Dubai-based Al-Arabiya satellite television network last January, Obama said Iran's leaders would find the extended hand of diplomacy if they "unclenched" their fists."