ارتكّ
1.
, (K,) verbal noun اِرْتِكَاكٌ, (TA,) [He was indistinct in his speech; said of a drunken man: (see its particle n., مُرْتَكٌّ, below:) or,] though seen to be eloquent [when alone (see again the particle n.)], he was impotent in speech in a case of altercation: (K:) or he was, or became, weak, or feeble; (TA;) [like رَكَّ.]
2.
ارتكَ فِى أَمْرِهِ
He doubted in, or respecting, his affair, or case. (Yaakoob, K.)
3.
ارتكَ is also synonym 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:) according 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.)