SiddiquiArabic, Urdu, Bengali From Arabic صَادِق (ṣādiq) meaning "true, truthful, veracious". It was traditionally used as an honorific title or a nickname for a trustworthy person.
SidiqiPashto, Persian, Afghan Means "the veracious" from Arabic صَدَقَ (ṣadaqa) meaning "to be truthful, to be sincere". It is also a variant of Persian Sadeghi.
SitdikovBashkir, Tatar Either derived from Arabic صَدِيق (ṣadīq) meaning "friend" or صَادِق (ṣādiq) meaning "true, truthful, veracious".
SuchwaniSanskrit Suchwani means "decendent of Suchu", where the given name Suchu means "truthful".