G3167 μεγαλεῖος (megaleîos)

KJV renderings: great things, wonderful works
Strong's definition: magnificent, i.e. (neuter, plural as noun) a conspicuous favor, or (subjectively) perfection
Derivation: from G3173 (μέγας);

From James Strong's public-domain dictionaries (G), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.