| earthshaking | (adjective) loud enough to shake the very earth | - |
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| (adjective) sufficiently significant to affect the whole world | Synonyms: world-shaking, world-shattering |
| shakable | (adjective) capable of being weakened | Synonyms: shakeable |
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| shakeable | (adjective) capable of being weakened | Synonyms: shakable |
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| shakedown | (adjective) intended to test a new system under operating conditions and to familiarize the operators with the system | - |
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| shaken | (adjective) disturbed psychologically as if by a physical jolt or shock | Synonyms: jolted |
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| shaky | (adjective) not secure; beset with difficulties | Synonyms: precarious |
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| (adjective) inclined to shake as from weakness or defect | Synonyms: rickety, wobbly, wonky |
| (adjective) vibrating slightly and irregularly; as e.g. with fear or cold or like the leaves of an aspen in a breeze | Synonyms: shivering, trembling |
| unshakable | (adjective) without flaws or loopholes | Synonyms: bulletproof, ironclad, unassailable, watertight |
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| (adjective) marked by firm determination or resolution; not shakable | Synonyms: firm, steadfast, steady, stiff, unbendable, unfaltering, unwavering |
| unshaken | (adjective) unshaken in purpose | Synonyms: undaunted, undismayed |
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