Kangxi Radical No.43 (Three Strokes)
尢 (尣) / wāng / “lame” radical (43)
aka: Kangxi Radical Lame
尤 (尢) / yóu / outstanding, surname You
Apparently (⇒ en.wiktionary) the only use for 尢 as an independent character is as a variant of 尤. I don’t know how usual or unusual that is, nor if it’s ever done when the character is used for the surname. I’d guess not, but who knows.
尴 [尷] / gān / embarrassed, ill at ease
尬 / gà / in an embarrassing situation