ارتاب
1.
He doubted, (S, Msb, K,) فِيهِ [respecting him, or it]. (S.) See 1, in the former half of the paragraph. And ارتاب بِهِ
He suspected him, or thought evil of him: (T, M, K:) or he saw on his part [or in him] what caused him to have doubt, or suspicion &c.; as also به
تريّب; (Har p. 257;) and به
استراب; i. e. رَأَى مِنْهُ مَا يَرِيبُهُ: (S, K, and Har ubi suprà:) the last used by [the tribe of] Hudheyl. (TA.)
2.
[It often means particularly He was sceptical in matters of religion.]