Deep down

but deep down, you're scared.

— Brooklyn Nine-Nine S1E3

Maybe because deep down...

— Grey's Anatomy S8E18

Now, even though she puts up a tough exterior, what Robin really wants, deep down...

— How I Met Your Mother S5E3

Deep down in your heart, Fiona-

— Modern Family S1E15

But you didn't, because deep down, you knew it wouldn't have mattered.

— Parks and Recreation S3E9

But deep down we are still animals.

— Zootopia

But I'm telling you, something deep down says he's my guy.

— Breaking Bad S4E8

Deep down they're very sensitive.

— Desperate Housewives S1E10