Superlative form of tense: most tense. (adjective)
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Use "tensest" in a sentence
"Japan disclosed Monday that its nuclear accident was more severe in its first days than it had previously admitted—casting new light on how Tokyo's early handling of the disaster briefly sent its relations with the U.S. into one of the tensest periods in years."
"ALEXANDRIA, EGYPT - Hamdi Hassan, a senior member of the banned Muslim Brotherhood party, was jailed by Egyptian authorities Jan. 28 during the tensest days of anti-government protests in this coastal city."
"The last 10 minutes of this episode were some of the tensest I've ever seen on television."