Tremble is a term used to describe an involuntary shaking or quivering of the body, usually caused by FEAR, anxiety, or excitement. The crossword solutions for this term include FLUTTER (7 letters), OSCILLATE (9 letters), FLICKER (7 letters), TREMOR (6 letters), SHRINK (6 letters), FEAR (4 letters), SHUDDER (7 letters), QUIVER (6 letters), QUAVER (6 letters), DODDER (6 letters), DITHER (6 letters), QUAKE (5 letters), SHAKE (5 letters), SHIVER (6 letters), and shakelikealeaf (14 letters). All of these words refer to a trembling or shaking motion, which can be caused by a variety of emotions or physical conditions.