G5593–ψυχρός–psuchros

And whoever shall give to drink to one of these little ones, a cup of cold water only, in the name of a disciple, verily, I say to you, he shall in no wise lose his reward.

ψυχροῦ psuchrou “of cold [water]”

I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot.

ψυχρὸς psuchros “cold”ψυχρὸς psuchros “cold”

So then, because thou art luke-warm, and neither cold nor hot, I will vomit thee out of my mouth:

ψυχρός, psuchros “cold,”