lack of energy

From LSJ

οἱ βάρβαροι τῇ ἀλήκτῳ συνουσίᾳ ὑπνώθησαν → the barbarians, exhausted by unremitting intercourse, fell asleep

Source

English > Greek (Woodhouse Extra)

μαλακία, τὸ μαλθακόν