supersize
From Longman Dictionary of Contemporary Englishsupersizesu‧per‧size1 /ˈsuːpəsaɪz $ -pər-/ adjective [only before noun] American English a supersize drink or meal in a fast food restaurant is the largest size that the restaurant serves Could I get a supersize fries with that?supersizesupersize2 verb [transitive] American English to give someone a larger meal or drink in a fast food restaurant→ See Verb table