Tepid

The majority of mankind is lazy-minded, incurious, absorbed in vanities, and tepid in emotion, and is therefore incapable of either much doubt or much faith; and when the ordinary man calls himself a sceptic or an unbeliever, that is ordinarily a simple pose, cloaking a disinclination to think anything out to a conclusion.

If you ask someone, "Is the room cold?" then the person might be unable to answer "yes" or "no", since the room may be tepid, or chilly; this is why a binary system of truth fails to capture many nuances.

The water was tepid.

I'm drinking a cup of tepid water.

He gave me a tepid response to the proposal.

The erratic behaviour of Hariri now is largely explained by the fact that his best days may be behind him, given his long absences from the country for security reasons, his declining Saudi business interests, some local challenges to his tepid leadership in recent municipal elections, and his decline in stature in the eyes of his Saudi backers.