Unmanliness

Euripides, Phoenician Women 509-510 (tr. Edward P. Coleridge):

For it is cowardly to lose the greater and to win the less.

ἀνανδρία γάρ, τὸ πλέον ὅστις ἀπολέσας
τοὔλασσον ἔλαβε.

Donald J. Mastronarde ad loc.:

Cf. Proverbs 16:8 (KJV):

Better is a little with righteousness than great revenues without right.

See Theodore Hill, "Arguments Employed in Favour of Unjust Action in Euripides, Thucydides, and Plato," Mnemosyne 74.6 (2021) 955-977 (at 963).