Comparative form of gentle: more gentle(adjective)
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Use "gentler" in a sentence
"Time was, that word was so inflammatory as to need a euphemism: fib was the slang gentler, prevarication the bookish term."
"When trout are surface feeding in gentler currents near subtle cutbanks, cast a dry fly down and accross."
"My friends wished me to go to the south, for I have always loved the sunshine, and there my little daughter died, and perhaps death will there come to me in gentler shape."