adult [ ad-=to 到；ult = grown up 成長 =>“grown up to full size 長大成型的” →] a . fully-grown; fully developed 已成熟的；已成 年的 / The magazine is meant for adult readers.該雜志是面向成年讀者的。

adulthood n. 成年

addict [ ad- = to 到；diet = to say 說 =>“to say yes to 對…表不贊成”=>“to give over to 縱情于…”→] v. give up to (a hobby)沉溺于，醉心于 / He addicted himself to gamble.他賭上癒了。

addiction n. 沉溺，吸毒成癮 

addictive a. 使成癮的；上癮的

adhere [ad- = to 到；her = to stick 粘；-e => “to stick to sth.粘到某物上”→]v.① stick fast 粘附 / Paint adheres best to a clean, dry surface. 油漆在干燥潔凈的表面上粘得最牢。②remain attached 依附，堅持 / Don't adhere to your own ideas when you are proved wrong.既然證明你錯了，就不要固執(zhí)己見了。

adherence n.依附；信奉；堅持；固執(zhí)

adherent a. 粘著的 n.信徒，追隨者

adjacent [ad-= at 在；jac = to lie 位于；-ent a. = -ing =>“l(fā)ying at or near 位于附近的”→]a. neighbouring 鄰近的 / The house adjacent to ours has been sold. 與我們相近的那座房子已經(jīng)出售了。