We found one dictionary that defines the word using sth up:

General (1 matching dictionary)

1. using sth up: Cambridge Advanced Learner's Dictionary

▸ Words similar to using sth up ▸ Usage examples for using sth up ▸ Idioms related to using sth up ▸ Wikipedia articles (New!) ▸ Words that often appear near using sth up ▸ Rhymes of using sth up ▸ Invented words related to using sth up