early 14c., "imposition of taxes," from Anglo-French taxacioun, Old French taxacion, from Latin taxationem (nominative taxatio) "a rating, valuing, appraisal," noun of action from past-participle stem of taxare "evaluate, estimate," also "censure, charge" (see tax (v.)).
late 14c., exaccioun, "action of demanding payment; imposition, requisitioning" of taxes, etc., from Old French exaccion and directly from Latin exactionem (nominative exactio) "a driving out; supervision; exaction; a tax, tribute, impost," noun of action from past-participle stem of exigere (see exact (adj.)). Meaning "a tax, tribute, toll, fee," etc. is from mid-15c.
"swindler, impostor," c. 1600; also "one easily cheated" (1640s); "a swindle, trick, sham, imposition" (1708), an obsolete word said to be from Turkish chaush "sergeant, herald, messenger," but the sense connection is obscure. Century Dictionary says the Turkish word is via Arabic khawas from Hindi khawas "an attendant." Also used as a verb, "to cheat, swindle" (1650s).
Also as a noun in Middle English and after, "charge, responsibility; anxiety, worry; burden on the mind or spirit," (c. 1300), from Anglo-French karke, from Old North French form of Old French carche, variant of charge "load, burden, imposition" (source of charge (n.)).
c. 1200, "a load, a weight," from Old French charge "load, burden; imposition," from chargier "to load, to burden," from Late Latin carricare "to load a wagon or cart," from Latin carrus "two-wheeled wagon" (see car). A doublet of cargo.
Meaning "responsibility, burden" is from mid-14c. (as in take charge, late 14c.; in charge, 1510s), which progressed to "pecuniary burden, cost, burden of expense" (mid-15c.), and then to "price demanded for service or goods" (1510s). Meaning "anything committed to another's custody, care, or management" is from 1520s.
Legal sense of "accusation" is late 15c.; earlier "injunction, order" (late 14c.). Meaning "address delivered by a judge to a jury at the close of a trial" is from 1680s. Electrical sense is from 1767. Slang meaning "thrill, kick" (American English) is from 1951. Meaning "quantity of powder required for one discharge of a firearm" is from 1650s. Military meaning "impetuous attack upon an enemy" is from 1560s; as an order or signal to make such an attack, 1640s.