It comes from the Latin verb dēcrēscere, from de-, which indicates negation, descent, or reversal, and the Latin verb crēscere, meaning “to grow.” Something that is decreasing is doing the opposite of growing—it's becoming smaller in size, quantity, extent, or in some other way.

What is the same meaning of decrease?

Some common synonyms of decrease are abate, diminish, dwindle, lessen, and reduce. While all these words mean "to grow or make less," decrease suggests a progressive decline in size, amount, numbers, or intensity. slowly decreased the amount of pressure.

What is the root word of diminish?

If you look at diminish, you see 'minis' which comes from the Latin word minus, as in subtraction. Other words that share this root are miniature and minuscule, all of which mean something that is small, or at least smallish.