| 1. | Informal. persuasive talk; flattery: to use soft soap to get one's way. |
| 2. | the semifluid soap produced when potassium hydroxide is used in the saponification of a fat or an oil. |

| soft soap n.
|
Flattery: “Mary asked the boss to stop giving her a lot of soft soap about her performance and to start leveling with her like any other employee.”
soft soap
|
soft soap
Flattery, cajolery, as in She's only six but she's learned how to get her way with soft soap. This colloquial expression alludes to liquid soap, likening its slippery quality to insincere flattery. Its figurative use was first recorded in 1830.