- 1 tax somebody/something to put a tax on someone or something; to make someone pay tax Any interest payments are taxed as part of your income. His declared aim was to tax the rich.
- 2tax somebody/something to need a great amount of physical or mental effort The questions did not tax me. The problem is currently taxing the brains of the nation's experts (= making them think very hard). Phrasal Verbstax somebody with something
NAmE//tæks//Verb Forms present simple I / you / we / they tax
he / she / it taxes
past simple taxed
-ing form taxing