“basic”

A living creature.

An inorganic compound (of molecular formula H₂O) found at room temperature and pressure as a clear liquid; it is present naturally as rain, and found in rivers, lakes and seas; its solid form is ice and its gaseous form is steam.

A (usually self-sustaining) chemical reaction involving the bonding of oxygen with carbon or other fuel, with the production of heat and the presence of flame or smouldering.

One who is deprived of a basic need is easily angered.

No longer maintaining contact or communications.

A data type provided by a programming language as a basic building block, such as integer, character or Boolean.