involuntary muscle contraction

TREMOR
List of words for the clue involuntary muscle contraction from the crossword:
TIC SPASM TIS SPASMS OER AINT TICS PEC REFLEX LAT HIC GTO TWAS CRAMP SHANT EEN ARENT EER SNEEZE
WordClue
FITspasm, crick
CRICKspasm, seizure
FIBERoptical or muscle
FIBREof glass or muscle
SPASMsudden contraction
THROEspasm, paroxysm
BICEPSmuscle having two heads
QUIVERtremor, tremble
SEIZUREspasm, throe
DECREASEcontraction, wane
PAROXYSMspasm, cramp
AGITATIONtremor, trepidation
SPHINCTERmuscle
EARTHQUAKEtremor
HIDDENNESSinvisibility
TONYIommi, guitarist