ἰσχυρός
Alt. ἰσχυ_ρός, ή, όν
Etym. ἰσχύς
I. "strong, mighty", Hdt., Soph.; τὸ ἰσχυρόν "strength, vigour", Thuc.; τὰ ἰσχυρότατα your "strongest points", id=Thuc.:— "hard", χθών Aesch.
2. "obstinate, stiff, stubborn, inveterate, excessive, severe", Hdt., Thuc.
II. adv. -ρῶς, "strongly, with all force", Thuc.:— "exceedingly", Hdt., Xen.