241. audience n.

242. August n. (abbr. Aug.)

243. aunt n.

244. author n.

245. authority n.

246. automatic adj.

247. automatically adv.

248. autumn n. (especially BrE)

249. available adj.

250. average adj., n.

251. avoid v.

252. awake adj.

253. award n., v.

254. aware adj.

255. away adv.

256. awful adj.

257. awfully adv.

258. awkward adj.

259. awkwardly adv.

260. baby n