Mislead (5)
'mislead' is the definition.
(I know that deceive is a more specific form of mislead)
This is all the clue.
(Other definitions for deceive that I've seen before include "Mislead, delude" , "Deliberately mislead" , "Intentionally mislead" , "Lie to (someone)" , "Cheat or mislead" .)
(Other definitions for deluded that I've seen before include "Holding false beliefs" , "mistaken" , "Deceived by nonsense" , "Duped or misled" , "Deceived or misled" .)
'mislead' is the definition.
(I've seen this in another clue)
This is all the clue.