Adapted for use in low light levels.

(neologism, graphical user interface) A user interface that is intentionally designed to trick users into doing things, such as giving up more information, or agreeing to unfavourable terms.

plural of dark pattern

past participle of give a darn

present participle of give a darn

simple past tense of give a darn

(chiefly in the negative) Euphemistic form of give a damn.

Third-person singular simple present indicative form of give a darn

Etheostoma caeruleum, a North American freshwater fish.

(idiomatic) To do or experience something exceedingly difficult or rare.