سر

10 استسرّ ذ He, or it, became concealed; or he, or it, concealed himself or itself: (K:) it (a thing, or an affair,) became hidden or concealed or secret: (A, Msb:) it (the moon) became concealed (S, M, A, TA) by the light of the sun, (TA,) [i. e. by its proximity to the sun, ] for one night, or for two nights. (AO, S.) -A2- استسرّهُ He took extraordinary pains in concealing it, or keeping it secret. (TA.) ― -b2- See also 5, in four places. ― -b3- اِسْتَسَرَّنِى He revealed to me his secret. (TA.) -A3- See also 1; and see 6, last sentence.