غيب

From the root غ ي ب‎ (ḡ-y-b).

غَيْب • (ḡayb) m (plural غُيُوب‎ (ḡuyūb))

1. verbal noun of غَابَ‎ (ḡāba) (form I)
2. that which is unseen, unperceived, unwitnessed, yet to be seen
   • 609–632 CE, Qur'an, 2:3:

     ‏اَلَّذِينَ يُؤْمِنُونَ بِالغَيْبِ وَيُقِيمُونَ الصَّلَاةَ وَمِمَّا رَزَقْنَاهُم يُنْفِقُونَ‎

     allaḏīna yuʾminūna bi-l-ḡaybi wa-yuqīmūna ṣ-ṣalāta wa-mimmā razaqnāhum yunfiqūna

     Those who trust in "what has yet to be seen", those who cause the keeping up of close connection [to God], and from what We have given them they cause to be dispensed.

غِيبَ • (ḡība) (form I)

1. third-person masculine singular past passive of غَابَ‎ (ḡāba)