Adjective
1. unexciting
2. tame
3. subdued, quiet, tame
4. tamed, broken, broken in, docile, gentle, domestic, domesticated, cultivated, tamed, tractable, manipulable, meek
Verb
1. docile, chasten
2. subdue, change, alter, modify, tone down
3. moderate, change, alter, modify, domesticate
4. cultivate, naturalize, naturalise, adapt, accommodate, domesticate
5. domesticize, domesticise, reclaim, change, alter, modify, domesticate
5. adapt, accommodate