رك

8 ارتكّ ذ , (K,) inf. n. اِرْتِكَاكٌ, (TA,) [ He was indistinct in his speech; said of a drunken man: (see its part. n., مُرْتَكٌّ, below:) or,] though seen to be eloquent [ when alone (see again the part. n.)], he was impotent in speech in a case of altercation: (K:) or he was, or became, weak, or feeble; (TA;) [like رَكَّ.] ― -b2- ارتكَ فِى أَمْرِهِ He doubted in, or respecting, his affair, or case. (Yaakoob, K.) ― -b3- ارتكَ is also syn. with اِرْتَجَّ [ He, or it, was, or became, in a state of commotion or agitation; or of convulsion, or violent motion; or shook, quaked, or quivered ]: (K:) accord. to Yaakoob, it is an instance of substitution [of ك for ج]. (TA.) One says, مَرَّ يَرْتَكُّ [ He passed by in a state of commotion &c.]. (TA.)