Noun
frequency [pl. frequencies] , {Auto.}
تردد {فيزياء}، {سيارات}
hesitation [pl. hesitations]
hesitancy [pl. hesitancies]
indecision {feelings & emotions}
vibration [pl. vibrations]
vacillation [pl. vacillations]
waver {ing}, [ wavered ; wavered ]
difficulty [pl. difficulties]
scruple [pl. scruples]
Verb
to hesitate [ hesitated ; hesitated ]
to echo [ echoed ; echoed ]
تردد {الصدى}
to shuttle [ shuttled ; shuttled ]
تردد {أمامًا وخلفًا}