under

under is on the Basic English 850 List.

umbrella - under - unit

under is one of the 1000 most common headwords.

u - under - understand

Preposition

In the same place as another thing, but lower.
- Synonyms: below, underneath, on the bottom of, beneath, inferior and lower
- Antonyms: above, over and on top of
They ate under the trees.
In the control of.
- Synonyms: subordinate and inferior
- Antonym: superior
He was under the leader of the organization.
In the middle of a process; experiencing.
- Synonyms: experiencing and undergoing
The idea is under the committee's judgement (judging).