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KEY: Tremble.
SYN: Shake, quake, quiver, totter, shiver, shudder, vibrate, jar.
ANT: Stand, steady, settle, still, calm.
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KEY: Tremendous.
SYN: Terrible, dreadful, awful, fearful, appalling.
ANT: Unimposing, unappalling, inconsiderable.
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KEY: Tremulous.