διακρᾰτ-έω · diakrat-eō — LSJ
hold fast, control, τὰ ὅπλα Phylarch. 24; τὸν ὅλον κόσμον Herm. ap. Stob. 1.15.16, cf. Iamb. Myst. 4.12; ὀργάδα D.H. 1.79; hold, ἐν τῷ στόματι Dsc. 2.152 (Pass.), cf. Gp. 12.30.3 (Pass.), etc.
hold in possession, BGU 1047 ii 6 (ii A.D., Pass.).
maintain, establish, λόγον Stob. 1.1.9; retain, preserve, in argument, Dam. Pr. 439.
hold up, support, ἱστόν Erot. s.v. ὅπλα; δέπας Ath. 11.492b (Pass.): metaph., support, keep alive, αὑτόν D.L. 9.43.
hold back, detain, in Pass., πρὸς τῶν χρηστῶν App. BC 2.8.