Meaning : Deeply involved.
Example :
Neck-deep in work.
Up to their necks in debt.
Synonyms : neck-deep, up to her neck, up to his neck, up to our necks, up to their necks, up to your neck
Up to my neck ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Marathi. Up to my neck ka matlab kya hota hai?