tremor

noun
1
a small earthquake in which the ground shakes slightly
لرزش, زلزله کوچک, زلزله خفیف, جنبش زمین, تکان زمین, حرکت خفیف زمین
2
a slight shaking movement in a part of your body caused, for example, by cold or fear
لرزش, لرزه, رعشه
There was a slight tremor in his voice.
She felt a tremor of fear run through her.
synonym quiver