1. a word, phrase, or clause that describes or limits the meaning of another word or phrase
Usage: grammar
2. something that changes or alters something else

Examples

• In the phrase ‘red car,’ the word ‘red’ is a modifier.
• Adjectives and adverbs are common types of modifiers.
• The modifier ‘very’ intensifies the meaning of ‘tall’ in ‘very tall.’
• Prepositional phrases can act as modifiers in sentences.
• The genetic modifier affected how the trait was expressed.
• Scientists used a chemical modifier to alter the protein’s structure.
• The software includes a modifier that adjusts image brightness.