Definition
To modify is to make changes — usually partial ones — to something that already exists, in order to alter or improve it: you modify a design, a contract, a recipe, or your own behaviour. From the Latin modus, 'measure', plus facere, 'to make' — to re-measure, to set to new limits. It overlaps with adapt, but where you adapt something to fit new conditions, you modify it deliberately, changing a feature here and a parameter there while the thing stays essentially itself. A small modification can lift a whole plan within a single constraint.
Examples
- Engineers modified the design to cut its weight without losing strength.
- She modified her argument slightly once she had seen the new data.
- You can modify the recipe by swapping the butter for oil.
Collocations
modify a design·slightly modify·modify behaviour·modify the terms·genetically modified
Synonyms
adapt·alter·adjust·amend·revise
Antonyms
preserve·retain·leave unchanged
See also
- modify vs adaptsynonyms
Word family
modification (noun)·modified (adjective)·modifier (noun)
In TOEFL & IELTS
A high-value academic verb for IELTS/TOEFL writing about changes to plans, designs, or behaviour. The noun is 'modification', and 'genetically modified' is a fixed phrase in science topics. Pronounced /ˈmɒdɪfaɪ/ (UK) or /ˈmɑːdɪfaɪ/ (US). Keep it apart from adapt: you adapt something to fit new conditions, but you modify it by deliberately changing a feature. In grammar a 'modifier' is a word that qualifies another.