underneath
🇺🇸
/ˌʌndərˈniːθ/
🇬🇧
/ˌʌndəˈniːθ/
directly below or under something, often hidden from view
The cat hid underneath the bed during the storm.
the true feelings or nature that are hidden beneath the surface
Underneath his tough appearance, he is actually very kind.
the bottom side or part of something
He checked the underneath of the car for any damage.