"a shivering, exciting feeling," 1670s, from thrill (v.). Meaning "a thrilling experience" is attested from 1936.
"lacking the knowledge or skill gained by experience," 1620s, past-participle adjective from inexperience.
"an unfortunate experience, a bad experience, ill-luck, calamity," c. 1300, misaventure, from Old French mesaventure (12c.) "accident, mishap," from mesavenir "to turn out badly;" see mis- (2) + adventure (n.) in the older sense of "that which happens by chance, fortune, luck." The spelling with -d- became regular after c. 1600.
an appeal to practical experience for a solution or proof, Latin, literally "(the problem) is solved by walking," originally in reference to the proof by Diogenes the Cynic of the possibility of motion.
early 15c., "person wise through experience," from expert (adj.). The word reappeared 1825 in the legal sense, "person who, by virtue of special acquired knowledge or experience on a subject, presumably not within the knowledge of men generally, may testify in a court of justice to matters of opinion thereon, as distinguished from ordinary witnesses, who can in general testify only to facts" [Century Dictionary].