enclitic
🇺🇸
/ɪnˈklɪtɪk/
🇬🇧
/ɪnˈklɪtɪk/
A word that is attached to another word and has little stress, like 'n't' in 'can't'.
The word 'not' is an enclitic that changes the meaning of the verb it's attached to.