Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “tack on something”

tack on something

phrasal verb with tack  /tæk/ verb [T]
to add something extra: They tacked an additional 18% on the bill as a service charge.
(Definition of tack on something from the Cambridge Academic Content Dictionary © Cambridge University Press)

Word of the Day


a document given to students or reporters which contains information about a particular subject

Word of the Day


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