PROFOUND
BAFFLING
GLOOMY
GRIPPING
APPALLING
CONVINCING
ENGROSSING
HILARIOUS
very exciting, engrossing, absorbing
believable, persuasive, realistic-looking
confusing, disturbing, puzzling
very bad, terrible, horrible
depressing, miserable, grim, forlon, frightening
deep and thoughtful
very funny
fascinating, very interesting,