shake A2

/ˈʃeɪk/ To move quickly back and forth or up and down.

shock A2

/ʃɔk/ A sudden, upsetting, or surprising event or feeling.

shakiness C2+

/ˈʃeɪkinəs/ the quality of being unsteady, trembling, or insecure

unshaken C2+

/ʌnˈʃeɪkən/ not weakened or disturbed; resolute