n. any of several trees of the genus Populus having leaves on flattened stalks so that they flutter in the lightest wind

adj. made of wood of the aspen tree

adj. (of the voice) quivering as from weakness or fear; "the old lady's quavering voice"; "spoke timidly in a tremulous voice"

adj. lacking decisiveness of character; unable to act or decide quickly or firmly

adj. uncertain how to act or proceed; "the committee was timid and mediocre and irresolute"

adj. inclined to shake as from weakness or defect; "a rickety table"; "a wobbly chair with shaky legs"; "the ladder felt a little wobbly"; "the bridge still stands though one of the arches is wonky"

adj. liable to rock; "on high rocky heels"

adj. affording no ease or reassurance; "a precarious truce"

adj. being in a tense state

adj. not established beyond doubt; still undecided or unknown; "an uncertain future"; "a manuscript of uncertain origin"; "plans are still uncertain"; "changes of great if uncertain consequences"; "without further evidence his story must remain uncertain"

adj. made of wood of the ash tree

adj. made of bamboo: "bamboo furniture"

adj. consisting of or made of wood of the beech tree

adj. consisting of or made of wood of the birch tree

adj. consisting of or made of cedar; "carved cedarn doors"

adj. made of fir or pine: "a plain deal table"

adj. consisting of or containing lignin or xylem; "ligneous (or woody) tissue"

adj. consisting of or made of wood of the oak tree; "a solid oak table"; "the old oaken bucket"

adj. of a plant; having a woody base that does not die down each year

adj. made or consisting of (entirely or in part) or employing wood; "a wooden box"; "an ancient cart with wooden wheels"

adj. affected by involuntary jerky muscular contractions; resembling a spasm; "convulsive motions"; "his body made a spasmodic jerk"; "spastic movements"

adj. unsteady in gait as from infirmity or old age; "a tottering skeleton of a horse"; "a tottery old man"

adj. unsteady in speech or action

adj. shining unsteadily

adj. having unpredictable ups and downs; "fluctuating prices"

adj. so surprisingly impressive as to stun or overwhelm; "such an enormous response was astonishing"; "an astounding achievement"; "the amount of money required was staggering"; "suffered a staggering defeat"; "the figure inside the boucle dress was stupefying"

adj. having a slight and rapid trembling motion; "palpitant movements rather than violent eruptions"; "my palpitating heart"

adj. vibrating slightly and irregularly; as e.g. with fear or cold or like the leaves of an aspen in a breeze; "a quaking bog"; "the quaking child asked for more"; "quivering leaves of a poplar tree"; "with shaking knees"; "seemed shaky on her feet"; "sparkling light from the shivering crystals of the chandelier"; "trembling hands"

adj. "a quaking bog"

adj. (of sound) fluctuating unsteadily; "a low-pitched wobbling sound"

adj. not subject to change or variation especially in behavior; "a steady beat"; "a steady job"; "a steady breeze"; "a steady increase"; "a good steady ballplayer"