disinterested, uninterested

Disinterested means “unbiased” or “impartial.”

• You cannot expect a disinterested opinion from your parents or your children.
• It is difficult to remain disinterested when your own livelihood is at stake.

Uninterested means “lacking curiosity about, or lacking interest in, something.”

• Jake and Elwood loved the blues and were uninterested in music that excited other teenagers.