Be knee-deep in American British informal verb phrase
1. Used when something that reaches one's knees.
James was knee-deep in water when he tried to rescue a kitten from the flood.
Having left our house empty for three months, we were knee-deep in wild grasses when returning.
2. Used to indicate a great amount of something which is sometimes even redundant.
I'm always knee-deep in deadlines during this semester.
My sister has been knee-deep in flowers that were gifted at her dance performance.
3. Used when one is involved in difficult or troublesome tasks.
Our country is still knee-deep in the second wave of coronavirus.
I have been knee-deep in housework all day when our family moved to the new house.
The verb "be" should be conjugated according to its tense.
actions are more important than words
He is a man of few words and many deeds. We can trust him.