| Dull |
| Flat |
| Mild |
| Drab |
| Vapid |
| Break |
| Bland |
| Milky |
| Broken |
| Soften |
| Busted |
| Docile |
| Subdue |
| Harness |
| Insipid |
| Pacify. |
| Rein in |
| Control |
| Subdued |
| G-rated |
| Domestic |
| Obedient |
| Tone down |
| __ master |
| Gentle __ |
| Subjugate |
| Tractable |
| Innocuous |
| Submissive |
| Spiritless |
| Unexciting |
| Pedestrian |
| Sans spice |
| Manageable |
| Rather dull |
| Not exciting |
| Watered down |
| Not so tough |
| Not electric |
| Lacking zest |
| Unstimulating |
| Lacking spice |
| Under control |
| Far from edgy |
| Mild-mannered |
| Uninteresting. |
| Easy to handle |
| Get control of |
| Hardly exciting |
| Break, in a way |
| Dull, as a party |
| Not very exciting |
| Far from exciting |
| Get under control |
| Unlikely to excite |
| Lacking excitement |
| Not likely to bite |
| Unlikely to offend |
| Bring under control |
| Lacking in excitement |
| Like petting-zoo animals |
| Like animals in a petting zoo |