The best replacement for action verb is linking verb.

The best alternatives to action verb are rated as following:
★★★★★  linking verb
★★  being verb
★  verb
  condition verb
  regular verb
  be verb

Your alternative for action verb is not listed? Suggest!
Speaking about action verb, one probably shouldn't forget about helping verb.

Other search terms related to action verb and their ratings are:
★★★★★ helping verb
You have in mind a companion for action verb and it is not yet here? Propose!



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action verb
linking verb
being verb