1. [late 16C+] an all-purpose profanity, used in a wide variety of contexts.
2. as past participle of sense 1; usu. as damned if... or ...be damned (cf. I’ll be damned! ).
[mid-19C+] a general intensifier, extremely, very, to a great extent.
[early 19C] an excl. implying one’s absolute refusal to do something.
[mid-18C+] an excl. of irritation, impatience, annoyance etc., also used attrib.
[mid-18C+] an excl. of annoyance, surprise, irritation etc.