Dug in and Hard-nosed

Hard-nosed and dug in are semantically related. In some cases you can use "Hard-nosed" instead an adjective phrase "Dug in".

Hard-nosed adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.

Dug in and hard-nosed are semantically related. Sometimes you can use "Dug in" instead an adjective phrase "Hard-nosed".