Noah Webster's Dictionary (n.) The state or quality of being little; as, littleness of size, thought, duration, power, etc.

Multi-Version Concordance Littleness (1 Occurrence) Matthew 17:20 And he says to them, Because of your little faith: for truly I say to you, If you have faith as a grain of mustard seed, you will say to this mountain, Be moved from this place to that; and it will be moved; and nothing will be impossible to you. (See NAS)