Where does “Sadiq” come from?

Sadiq is an Arabic name from صَدِيق (ṣadīq), meaning "truthful" or "one who tells the truth."

Ancestry of “Sadiq”, step by step

Step	Language	Word	Meaning
1	Arabic	صَادِق	true, sincere; reliable; genuine
2	Arabic	صَدَقَ	to be sincere, to be right, to come true
3	Arabic	د	—
4	Arabic	اِسْتَخْدَمَ	to use, hire

Sadiq — Etymology, Origin & Word History | Etymology Explorer