You searched for: “tame
tame, tame
tame (TAYM) (adjective)
1. Not wild; domesticated or submissive: "My cat is tame and loves to play with me and never uses her talons to scratch me."
2. Insipid, lacking spirit or zest: "We were disappointed because we thought the sports event was merely a tame game."
tame (TAYM) (verb)
1. To control or to bring into a domestic and submissive state: "The zoo keeper would like to tame the wild elephant, but so far he can only admire it from a distance."
2. To soften or to tone down: "He struggled to tame his temper while talking with his supervisor at work."

He was trying to tame the hyperactivity of his kitten by using a very tame voice when he had to scold her; however, he didn't want her to be too tame so she would be just another tame household pet.