characterized by or indicative of distress or affliction or danger or need; "troubled areas"; "fell into a troubled sleep"; "a troubled expression"; "troubled teenagers"
a change downward; "there was a decrease in his temperature as the fever subsided"; "there was a sharp drop-off in sales"
a process of becoming smaller or shorter
decrease in size, extent, or range; "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fall to under a hundred pounds"; "his voice fell to a whisper"
causing or fraught with or showing anxiety; "spent an anxious night waiting for the test results"; "cast anxious glances behind her"; "those nervous moments before takeoff"; "an unquiet mind"