Meaning: Lukewarm. Apathetic.
Rev 3:14 And unto the angel of the church of the Laodiceans write; These things saith the Amen, the faithful and true witness, the beginning of the creation of God; [15] I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot. [16] So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth.