tame
Definitions
Domesticated or trained to be docile and submissive to humans.
Lacking in excitement, spirit, or interest; dull.
To bring under control or curb the power of something.
Examples
It is difficult to tame a wild animal once it has grown to adulthood.
The once rebellious teenager has become quite tame over the last few years.
Synonyms
docile gentle domesticated submissive meek tractable compliant