ἥδυμος
From LSJ
μέγα γὰρ τὸ τῆς θαλάσσης κράτος → great is the power of the country that controls the sea, control of the sea is a great thing, the dominion of the sea is a great matter, the rule of the sea is a great matter, the rule of the sea is indeed a great matter, control of the sea is a paramount advantage
English (LSJ)
Dor. ἅδ- ον, poet. for ἡδύς,
A sweet, pleasant, usu. epith. of sleep (v. νήδυμος, for which it is v.l. in Il.2.2, Od.4.793, 12.311, cf. Hsch. s.v. νήδυμος), h.Merc.241, 449, Antim.74, Simon.79, A.R.2.407; λόγοι Epich.179; οἶνος Orph.Fr.261: irreg. Sup. -έστατος Alcm. 137.