Strong's G3167 · Greek

μεγαλεῖος

megaleios · meg-al-i'-os

from 3173; magnificent, i.e. (neuter, plural as noun) a conspicuous favor, or (subjectively) perfection

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 μεγαλεῖος , -εία, -εῖον ( μέγας ), [in LXX: Ps 70 (71):19 ( גָּדוֹל ), al., freq. in Sir;] magnificent , splendid (Xen., Plut., al.): Ac 2:11 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain