Conserve means to use something carefully so that it does not run out.
For example, you can conserve water by taking shorter showers and turning off the faucet when you brush your teeth.
We need to conserve energy to reduce our carbon footprint.
Noun: conservation (plural: conservations).
Adjective: conservative.
Verb: to conserve.
Adverb: conservatively.
The word "conserve" comes from the Latin word "conservare", which means "to keep safe" or "to preserve". It is made up of the prefix "con-", which means "together", and the verb "servare", which means "to keep".
What things can you conserve?