1.anesthesia (=美anaesthesia) n.麻醉(loss of sensation)

詞根記憶：an(無)+esthe(感覺)+sia--無感覺--麻醉

例:Surgical patients operated on at night need less anesthesia.

同根詞：anesthetic(a．麻醉的；n.麻醉劑)：aesthetics(n.美學)

2.animate n.有生命的(alive)；v.使有生氣(to give spirit and support to);繪制（動畫片）(to make or design in such a way as to create lifelike movement)

聯想記憶：anim(生命)+ate--使圖畫有生命--繪制（動畫片）

例:animated cartoon動畫

3.animosity n.憎惡，仇恨(enmity)

聯想記憶：anim(生命)+osity--用整個生命去恨--憎惡，仇恨

例:Much animosity existed between the two opponents.

4.announce v.宣布，發表(to proclaim)；通報…的到來(to give notice of the arrival)

詞根記憶：an+nounce(講話，說出)--說出來--宣布

例:The OPEC had long been expected to announce a reduction in output to bolster sagging oil prices.

派生詞:announcement(n.公告；發表)

同根詞：renounce(v.宣布放棄)

5.announcement n.宣告(the act of announcing or of being announced);公告，通告(a public notification or declaration)

詞根記憶：來自announce(v.宣布；述說)

例:The following appeared in an announcement issued by the publisher of The Mercury a weekly newspaper.

同根詞：denouncement(n.公開譴責，抨擊)

6.anole n.變色龍（產于美洲的蜥蠕類）(a kind of lizard with the ability to change color)

例:anole lizard species變色蜥蜴種群

7.anomaly n.異常，反常(deviation from the common rule)

聯想記憶：a（不）+nomal(看作normal正常的)+y--不正常--反常

例:The test results contained anomalies that the scientists could not explain.

派生詞:anomalous(a.異常的，不規則的)

8.anonymous a.匿名的(unnamed)

詞根記憶：an(無)+onym(名稱)+ous--無名稱的--匿名的

例:An anonymous donor gave a million dollars to the charity.

同根詞：synonym(n.同義詞)

9.answerable a.(to)應負責的( responsible)

詞根記憶：來自answer(v.回答，盡責)

例:I am answerable to the company for the use of this equipment.

10. antagonism n.對抗，敵對(opposition, hostility)

詞根記憶：ant(反)+agon(打斗，比賽)+ism--對著打--對抗

例:Randolph helped to weaken organized labor's antagonism toward Black workers.

同根詞：antagonise(v.使反抗，使敵對)；antagonize(v.對抗)：antagonist（n.敵手，對手）