구 (具) surname
It is written 具 in hanja. The single character 具 generally means tool. That is not the clan origin.
Common English spellings: Koo, Gu, Ku. Official romanization: Gu.
Some surnames share a sound and use different hanja. You need the hanja to know which one it is.
Six names made with the surname 구. Make more below.
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Your names
구예경
具禮敬
Koo Ye-gyeong
courtesy + respect
구우림
具雨琳
Koo U-rim
rain + jade
구금연
具錦蓮
Koo Geum-yeon
brocade + lotus
구온진
具溫珍
Koo On-jin
warm + precious
구아예
具雅睿
Koo A-ye
elegant + clever
구석영
具碩英
Koo Seok-yeong
great + flower
Hanja meanings are dictionary meanings of each character. A name is not rated lucky or unlucky.