Dry, ironic (3)
I believe the answer is:
wry
I believe this is a double definition.
'dry' is the first definition.
(I know that dry can be written as wry)
'ironic' is the second definition.
(wry can mean ironic or humorous)
(Other definitions for wry that I've seen before include "Ironically humorous" , "Of humour, dry and mocking" , "Twisted; sardonic" , "Crooked - droll" , "Dry and mocking, or bent out of shape" .)