<2,,1487 686 1065,ei arage> denotes "if in consequence," e.g., Act 17:27, "if haply" they might feel after God, in consequence of seeking Him.
<3,,3379,me pote> lit., "lest ever," "lest haply," e.g., Luk 14:29, of laying a foundation, with the possibility of being unable to finish the building; Act 5:39, of the possibility of being found fighting against God; Heb 3:12 RV, "lest haply," of the possibility of having an evil heart of unbelief. The RV usually has "lest haply" (AV "lest at any time"), e.g., Mat 4:6, Mat 5:25, Mat 13:15, Mar 4:12, Luk 4:11, Luk 21:34, Heb 2:1; in Mat 25:9, the RV has "peradventure;" in 2Ti 2:25, AV and RV, have "if peradventure;" in Joh 7:26 the RV has "Can it be that," for the word "Do" in the AV.
<4,,3381,me pos> denotes "lest in any way," "by any means," e.g., 2Co 9:4, AV, "lest haply," RV, "lest by any means."
<5,,3381 4458,me postrong> denotes "lest somehow;" the RV has "lest haply" in Act 27:29 (some mss. have No. 4, here).