Answer: supersize

AnswerCrossword Clue
SUPERSIZEFast food order
SUPERSIZEMcDonald's verb
SUPERSIZETall order at McDonald's, once?
SUPERSIZE2004 documentary film title (with "Me")
supersizeProduce or serve (something) in a larger size
supersizein a very large size / a supersize dress / to increase the size of