Nouns

(n)low, depressionan air mass of lower pressure; often brings precipitation“a low moved in over night bringing sleet and snow”
(n)lowa low level or position or degree“the stock market fell to a new low”
(n)first gear, first, low gear, lowthe lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving

Verbs

(v)moo, lowmake a low noise, characteristic of bovines

Adjectives

(a)lowless than normal in degree or intensity or amount“low prices”, “the reservoir is low”
(a)lowbeing at or having a relatively small elevation or upward extension“low ceilings”, “low clouds”, “low hills”, “the sun is low”, “low furniture”, “a low bow”
(s)low, low-tonedvery low in volume“a low murmur”, “the low-toned murmur of the surf”
(s)lowunrefined in character“low comedy”
(a)low, low-pitchedused of sounds and voices; low in pitch or frequency
(s)abject, low, low-down, miserable, scummy, scurvyof the most contemptible kind“abject cowardice”, “a low stunt to pull”, “a low-down sneak”, “his miserable treatment of his family”, “You miserable skunk!”, “a scummy rabble”, “a scurvy trick”
(s)humble, low, lowly, modest, smalllow or inferior in station or quality“a humble cottage”, “a lowly parish priest”, “a modest man of the people”, “small beginnings”
(s)depleted, lowno longer sufficient“supplies are low”, “our funds are depleted”
(s)broken, crushed, humbled, humiliated, lowsubdued or brought low in condition or status“brought low”, “a broken man”, “his broken spirit”
(s)gloomy, grim, blue, depressed, dispirited, down, downcast, downhearted, down in the mouth, low, low-spiritedfilled with melancholy and despondency“gloomy at the thought of what he had to face”, “gloomy predictions”, “a gloomy silence”, “took a grim view of the economy”, “the darkening mood”, “lonely and blue in a strange city”, “depressed by the loss of his job”, “a dispirited and resigned expression on her face”, “downcast after his defeat”, “feeling discouraged and downhearted”

Adverbs

(r)lowin a low position; near the ground“the branches hung low”