*sʼuṭusʼuṭusʼuṭusʼúṭuwv-redquiver, shake, shiver due to fear, cold, nervousnesssyn*šiṭi*yohpʰoyohpʰocf*qaʔsʼiʔsʼi*siʔṭisiʔṭialways frequentativeFrequentative of*sʼuṭu