英语词源字典 - 在线词源网站

aggravate (v.)[aggravate 词源字典]: 1520s, "make heavy, burden down," from past participle adjective aggravate "burdened; threatened" (late 15c.), from Latin aggravatus, past participle of aggravare "to render more troublesome," literally "to make heavy" (see aggravation). Earlier in this sense was aggrege (late 14c.). Meaning "to make a bad thing worse" is from 1590s; that of "exasperate, annoy" is from 1610s.
To aggravate has properly only one meaning -- to make (an evil) worse or more serious. [Fowler]
Related: Aggravated; aggravating. Phrase aggravating circumstances is recorded from 1790.[aggravate etymology, aggravate origin, 英语词源]
falter (v.): late 14c., "to stagger, totter," of unknown origin, possibly from a Scandinavian source (compare Old Norse faltrask "be burdened, hesitate, be troubled"), or else a frequentative of Middle English falden "to fold," influenced by fault (but OED rejects any direct connection to that word). Of the tongue, "to stammer," mid-15c. Related: Faltered; faltering.
gravid (adj.): "pregnant," 1590s, from Latin gravidus "loaded, full, swollen; pregnant with child," from gravis "burdened, heavy" (see grave (adj.)). Related: Gravidity. Gravidation "pregnancy" is attested from mid-15c.
overburden (v.): also over-burden, "to put too much weight on," 1530s, from over- + burden (v.). Earliest uses are figurative. Related: Overburdened; overburdening.
prideful (adj.): c. 1500, from pride (n.) + -ful. Related: Pridefully; pridefulness. Old English had prutswongor "overburdened with pride."
unburden (v.): 1530s, "to unload" (transitive), from un- (2) "reverse of" + burden (v.). Similar formation in German entbürden. Reflexive sense is recorded from 1580s. Related: Unburdened; unburdening.