This root form (lemma) is used in 2 different forms in the NT: συνήθλησάν (IAA3··P), συναθλοῦντες (PPA·NMP).
It is glossed in 2 different ways: ‘contended_together’, ‘contending_together’.
OET PHP 1:27 Greek word=συναθλοῦντες (sunathlountes) Morphology=PPA·NMP English gloss=‘contending_together’ SR GNT PHP 1:27 word 28
OET PHP 4:3 Greek word=συνήθλησάν (sunaʸthlaʸsan) Morphology=IAA3··P English gloss=‘contended_together’ SR GNT PHP 4:3 word 15