up to ears

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up to (one's) ears (in something)

Extremely busy (with something); deeply or overly involved (in something); possessing, filled up with, or overwhelmed by an excessive amount (of something). There's no way I can take a vacation right now, I'm up to my ears in work at the moment! I only meant to be peripherally involved in David's business venture, but before I knew it I was in up to my ears! Dana was worried she wouldn't find any work as an accountant working for herself, but she's up to her ears in clients!
See also: ear, up

up to one's ears

(in something) Go to up to one's neck (in something).
See also: ear, up

up to (one's) ears

Deeply involved or occupied fully: I'm up to my ears in work.
See also: ear, up