Ravishing

Delightful; entrancing. Ravishing is one of those adjectives you would imagine that British men in movies based on Jane Austen novels used to describe women they see dancing at a ball and automatically fall in love with. It captures more than beauty; it implies a sense of mystery, intellect, and cunning. It also sounds like the word radish, which is equally delightful and fun to say.
Blithe

Happy or joyous; also, showing a casual and cheerful indifference considered to be callous. A blithe person easily finds joy in life, often through a carefree attitude that doesn’t take anyone else into consideration. Case in point: Elvira, the titular ghost in Noel Coward’s play, Blithe Spirit, who literally died laughing at a BBC radio program. Her version of fun in the afterlife is attempting to kill her still-living husband so they can be reunited. Nothing wrong with that, right?
Indubitable

Too evident to be doubted; unquestionable. Indubitable is indubitably one of the most fun adjectives – nay, words! – to say in the English language, but not nearly as fun to say as indubitability. And that is an indubitable fact.