lukewarm

Between warm and cool.

Wash it in lukewarm water.

My curry is lukewarm.

Unenthusiastic (about a proposal or an idea).

The suggestion met with only a lukewarm response.

The skipper Mr. Cooke had hired at Far Harbor was a God-fearing man with a luke warm interest in his new billet and employer, and had only been prevailed upon to take charge of the yacht after the offer of an emolument equal to half a year's sea pay of an ensign in the navy.