To have regard, to care, to reck; in Middle English only with negative: To care nothing, to ‘reck… With infinitive or object clause. To care. Obsolete…

to give (little, nought,etc.) of: to value (at little, etc.), care (little, etc.) for. Also, to give no force of, to give no charge of. Obsolete.

In negative and conditional construction. Not to mind (something proposed); to have no disinclination or objection, be disposed to. Now only with if…

Phrases. †to cast one's cap at: to show indifference to, give up for lost. †to come, fall under, lie in one's cap: to occur to, be in one's mind. to…

transitive. In negative contexts: to take account of; to heed, regard; to be concerned about; to care. With simple object, indirect question, or…

intransitive with at. To be indifferent. Obsolete. rare.

transitive. To perform in a perfunctory manner; to go through as a matter of routine.

not to give (also care) a fuck: not to care in the slightest. Hence in other dismissive (and chiefly negative) constructions.

to give a motherfuck: to care; to worry, bother. Frequently in not to give a motherfuck and variants: not to care at all. Cf. fuck, n. phrases 1.