唯一 (ゆいいつ)only; sole; unique

only; sole; uniquenouns which may take the genitive case particle 'no', noun (common) (futsuumeishi)

唯一, its kanji, and other words that share them.Open this graph

Kanji in 唯一

唯ただordinary; common
唯物論ゆいぶつろんmaterialism (philosophy)
史上唯一しじょうゆいいつthe first in history; only once in history
史的唯物論してきゆいぶつろんhistorical materialism
吾唯足知われただたるをしるI am content with what I am (have); Rich is the person who is content with what he is
唯々ただただabsolutely; only
唯々諾々いいだくだくobedient; submissive
唯々諾々としていいだくだくとしてobediently; submissively
一つひとつone
一方いっぽうone (esp. of two); the other
一時いちじone o'clock
一月いちがつJanuary
一番いちばんnumber one; first
一般いっぱんgeneral; universal
一部いちぶone part; one portion
十一じゅういちeleven; 11

See how 唯一 connects to the rest of Japanese.