One who believes that climate change is due to human activity but who does not think it is a serious problem.

plural of Lukens

A surname.

A person who has an indifferent or unenthusiastic attitude. / Synonym of lukewarmer (“one who believes that climate change is due to human activity but who does not think it is a serious problem”)

plural of lukewarmist

An indifferent or unenthusiastic attitude. / The belief that climate change is due to human activity but that it is not a serious problem.

(rare, temperature) Between warm and cool, but cooler than lukewarm. / (rare) Not very enthusiastic (about a proposal or an idea) (and less enthusiastic than lukewarm would imply).

(rare) Synonym of lukecold (“moderately cool”, “not very enthusiastic”)