아-ㄹ- know it

아가씨 young lady; form of address for unmarried women

아기 baby

아까 a short while ago, just a moment ago

아내 my wife

아니면 or (sentence-initial), or (between nouns)

아니에요 no; it is not

아니오 no

아드님 son (honorific)

아들 son