بسأ1 بَسَأَ بِهِ, and بَسِئَ; (S, M, K;) aor. ـَ (M, K;) inf. n. بَسْءٌ and بُسُوْءٌ (S, M, K) and بَسَآءٌ, (M, K,) all of the former verb; (M;) and بَسَأْ, (M, K,) of the latter; (M;) He was, or became, sociable, friendly, or familiar, with him; (namely, a man, S, TA;) or cheered, or gladdened, by his company or converse, or by his presence. (S, M, K.) b2:  بَسَأَ بِالأَمْرِ, inf. n. بَسْءٌ and بُسُوْءٌ, He was, or became, accustomed, or habituated, to the affair, or case. (M, * K, * TA.) b3:  [And hence,] بَسَأَ بِهِ He despised, or made light of, him, or it. (M, K.) 4 أَبْسَأْتُهُ I made him sociable, friendly, or familiar; or cheered him, or gladdened him, by my company or converse, or by my presence. (S, K.) بَسُوْءٌ A she-camel that offers no opposition to her milker, (S, K,) being of a good disposition, and accustomed to him. (TA.)