Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “alter”

alter

verb [I/T]    /ˈɔl·tər/
to change a characteristic , often slightly , or to cause this to happen : [T] The coat was too long , so I took it back to the store to have it altered. alterable  /ˈɔl·tər·ə·bəl/ adjective Some things in life are not alterable. alteration    /ˌɔl·təˈreɪ·ʃən/ noun [C/U] [C] I had to make some alterations in my research paper .
(Definition of alter verb from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of alter

Definitions of “alter” in other dictionaries

Word of the Day

amicable

relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More