The forcing of an attack through the parry, using strength(noun)
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Use "insistence" in a sentence
"This insistence is the more striking because a number of critics — most passionately and recently Harold Bloom — have associated Shakespeare with the rejected Falstaff, and Hal with the narcissistic young Earl of Southampton, whom Shakespeare may have courted in the first part of his love-sonnet sequence."
"To this end, Israel's challenge and insistence is a deliberate attempt to change the law."
"They told him, with a certain insistence, that was half appeal for belief, half challenge for contradiction, how much they were going to enjoy their idleness."