ج س سj-s-s
(ن) جَسَّ يَجُسُّ جَسًّاjassa yajussu jassan: to feel the pulse to ascertain the state of health; to feel something out to ascertain its condition.
Form V (tafaʿʿul) تَجَسَّسَ يَتَجَسَّسُ تَجَسُّسًاtajassasa yatajassasu tajassusan: to go deliberately prying into someone's private affairs, to spy. ﴿وَلَا تَجَسَّسُوْا﴾ (Al-Ḥujurāt 49:12)