häftig

Etymology
.

Adjective

 * 1) (sudden and) forceful or intense (like a violent or intense release of energy); violent, intense, fierce, etc.
 * 2) * 1861, Hagberg, translation of Shakespeare's Othello, II, 1. Iago speaking
 * "sv"
 * 1) * 1861, Hagberg, translation of Shakespeare's Othello, II, 1. Iago speaking
 * "sv"
 * 1) * 1861, Hagberg, translation of Shakespeare's Othello, II, 1. Iago speaking
 * "sv"
 * 1) * 1861, Hagberg, translation of Shakespeare's Othello, II, 1. Iago speaking
 * "sv"
 * "sv"

- Han är häftig och har ett mycket oregerligt sinne; det kan nog hända, att han slår efter dig


 * 1) easily angered (of a person or their temperament); volatile, hot-tempered, etc.
 * 2)   cool
 * 1)   cool

Usage notes

 * now dominates in the sense that häftig will be understood as cool as long as something might reasonably be described as cool, rather than as one of the other senses.
 * Often has a slightly more intense feel in compared to  (which also appears in Swedish), though it's subtle. Bungee jumping is more likely to be described as a "häftig " than a "cool upplevelse," for example.