GRC
LSJ
ατος, τό, joy caused to any one, = ἀγαλλίαμα, Zonar.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
τό, die Einem gemachte Freude, Zonar.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)
TBESG
joy caused to any one (MT)
Translators Brief lexicon of Extended Strongs for Greek based on Abbot-Smith, A Manual Greek Lexicon of the New Testament (1922) (=AS), with corrections and adapted by Tyndale Scholars