Antonyms of adj delightful

1 sense of delightful

Sense 1
delightful, delicious -- (greatly pleasing or entertaining; "a delightful surprise"; "the comedy was delightful"; "a delicious joke")

INDIRECT (VIA pleasing) -> displeasing -- (causing displeasure or lacking pleasing qualities)

Similarity of adj delightful

1 sense of delightful

Sense 1
delightful, delicious -- (greatly pleasing or entertaining; "a delightful surprise"; "the comedy was delightful"; "a delicious joke")
       => pleasing (vs. displeasing) -- (giving pleasure and satisfaction; "a pleasing piece of news"; "pleasing in manner and appearance")