Definition of "underneath" in English

adverb

1. Below; in a place beneath.

   • I can't take my sweater off: I amn't wearing anything else on underneath.

2. On the underside or lower face.

preposition

1. Under, below, beneath.

   • Underneath the water, all was calm.
   • We flew underneath the bridge.
   • We looked underneath the table.

2. Under the control or power of.

   • There was little freedom underneath the Nazi jackboot.

adjective

1. Under, lower.

   • You can have the underneath bunk.

noun

1. The bottom of something.

   • The underneath of the aircraft was painted blue.

2. A background radio sound track played during a specific announcement or program.

   • The underneath is music from the latest album by ….