| Truth |
| Really! |
| 'Truly' |
| I swear! |
| It's true |
| For real? |
| Honest ___ |
| Honest(ly) |
| For reals? |
| Seriously?! |
| Swear words |
| I'm serious! |
| Swear to God |
| On my honor! |
| Dead serious |
| I __ mean it |
| Scout's honor |
| That's a fact |
| It's the truth |
| That's the truth |
| 'Cross my heart' |
| I'm on the level! |
| It's really true! |
| I kid you not! |
| Honest-to-goodness |
| God's honest truth |
| I swear it's true! |
| It's on the level! |
| ''I'm not kidding!'' |
| This is on the level |
| Response to a skeptic |
| And I am not kidding! |
| 'And that's the truth!' |
| It's the truth!": 2 wds. |
| That's the honest truth! |
| I kid you not, Angelina!"? |
| I'll swear on a stack of Bibles! |
| ''And that's ___'' (''Believe you me'') |