lower, lour -- (set lower; "lower a rating"; "lower expectations")
turn down, lower, lour -- (make lower or quieter; "turn down the volume of a radio")
lower, depress -- (cause to drop or sink; "The lack of rain had depressed the water level in the reservoir")
frown, glower, lour, lower -- (look angry or sullen, wrinkle one's forehead, as if to signal disapproval)
Overview of adj low
The adj low has 10 senses
low -- (less than normal in degree or intensity or amount; "low prices"; "the reservoir is low")
low -- (literal meanings; being 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")
low, low-toned -- (very low in volume; "a low murmur"; "the low-toned murmur of the surf")
low -- (unrefined in character; "low comedy")
low, low-pitched -- (used of sounds and voices; low in pitch or frequency)
abject, low, low-down, miserable, scummy, scurvy -- (of 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")
humble, low, lowly, modest, small -- (low or inferior in station or quality; "a humble cottage"; "a lowly parish priest"; "a modest man of the people"; "small beginnings")
depleted, low -- (no longer sufficient; "supplies are low"; "our funds are depleted")
broken, crushed, humbled, humiliated, low -- (subdued or brought low in condition or status; "brought low"; "a broken man"; "his broken spirit")
gloomy, grim, blue, depressed, dispirited, down, downcast, downhearted, down in the mouth, low, low-spirited -- (filled 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")