fractious (en)

difficult to control; unruly; irritable and quarrelsome

jouissance (fr)

physical or intellectual pleasure, delight, or ecstasy; the concept featured heavily in the psychoanalysis of Jacques Lacan's and was expanded on by Roland Barthes for literary theory, to contrast with mere "pleasure" derived from reading texts that don't challenge the reader as a subject. can also refer to pleasure that devolves into pain

obviate (en)

(verb) to anticipate and prevent (as a situation) or make unnecessary (as an action)

rarefied (en)

(adjective) being less dense / (adjective) of, relating to, or interesting to a select group; esoteric / (adjective) very high / (verb) to make rare, thin, porous, or less dense; to expand without the addition of matter / (verb) to make more spiritual, refined, or abstruse / (verb) to become less dense

sfumato (en)

(noun) the definition of form in painting without abrupt outline by the blending of one tone into another

teleological (en)

the philosophical attempt to describe things in terms of their apparent intrinsic purpose, directive principle, or goal, irrespective of human use or opinion

vertiginous (en)

causing vertigo, especially by being extremely high or steep