1. Expressions (phrases, clauses, etc.), Ichidan verb

   to be on the right track; to be doing well; to be looking good; to be coming along nicely

   Colloquial

Also written いい線行ってる【いいせんいってる】iisenitteru、良い線いってる【いいせんいってる】iisenitteru、良い線行ってる【いいせんいってる】iisenitteru