Idealistic and somewhat unusual to dispense with tee? (8)
I believe the answer is:
quixotic
'idealistic' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for quixotic that I've seen before include "Extravagantly chivalrous like Cerantes' Don" , "Absurdly impractical" , "Romantically impractical" , "Impractically idealistic" , "Having impractical ideas" .)