We found one dictionary that defines the word be up to your neck in sth:

General (1 matching dictionary)

1. be up to your neck in sth: Cambridge Advanced Learner's Dictionary

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