לֹא

From LSJ

μούνη γὰρ ἄγειν οὐκέτι σωκῶ λύπης ἀντίρροπον ἄχθος → I have no longer strength to bear alone the burden of grief that weighs me down, I no longer have the strength to hold up alone the weight of grief that pushes against me, I no longer have the strength to counterbalance alone the weight of grief that acts as counterweight, I have no longer strength to balance alone the counterpoising weight of sorrow

Source

English (Strong)

or lowi; or loh (Deut. 3:11); a primitive particle; not (the simple or abs. negation); by implication, no; often used with other particles (as follows): X before, + or else, ere, + except, ig(-norant), much, less, nay, neither, never, no((-ne), -r, (-thing)), (X as though...,(can-), for) not (out of), of nought, otherwise, out of, + surely, + as truly as, + of a truth, + verily, for want, + whether, without.