Nouns

(n)low status, lowness, lowlinessa position of inferior status; low in station or rank or fortune or estimation
(n)downheartedness, dejectedness, low-spiritedness, lowness, dispiritednessa feeling of low spirits“he felt responsible for her lowness of spirits”
(n)lownessthe quality of being low; lacking height“he was suddenly aware of the lowness of the ceiling”
(n)lownessa low or small degree of any quality (amount or force or temperature etc.)“he took advantage of the lowness of interest rates”