Lemma صِدِّيق has 4 unique word forms and appears 5 times in the Quran.

Word Translation Occurrences
صِدِّيقٗا a man of truth, truthful 4
ٱلصِّدِّيقُ the truthful one 2
ٱلصِّدِّيقُونَۖ (are) the truthful 2
وَٱلصِّدِّيقِينَ and the truthful 2