词根词缀：alexo-, alex-, alexi-

【来源及含义】Greek: defend, protect, ward off, keep off

【同源单词】Alexander, alexeteric, alexicacon, alexidine, alexin, alexipharmac

词根词缀：-erc-, -erci-

【来源及含义】Latin: [from arcere] to restrain, to enclose, to confine; to keep off

【同源单词】boxercise, coerce, coercer, coercible, coercimeter, coercion

词根词缀：-fend, fend-, fen-

【来源及含义】Latin: ward off, to ward off, strike, keep off, guard, protect; from fendere [found only in compounded words]

【同源单词】Audemus jura nostra defendere, counteroffensive, defence, defenceless, defencelessly, defend