gonguzo describes voiced complaint or murmuring in response to a person, teaching, outcome, or situation.

The attested use is verbal complaint or murmuring directed against a person, teaching, or circumstance: people object to Jesus and his words in John 6:41, John 6:61, and John 7:32, complain against his disciples in Luke 5:30, and protest an outcome in Matthew 20:11. It also occurs in a prohibition and warning against such conduct in John 6:43 and 1 Corinthians 10:10.

1. Complaining or murmuring in objection · dominant

   The verb marks expressed objection in varied settings: in John 6:41 the APB renders the response to Jesus' claim as “grumbled about him,” while John 6:61 has disciples “murmuring about this.” In Luke 5:30 the complaint is against his disciples and introduces a question about eating and drinking; Matthew 20:11 presents murmuring against the householder after payment. John 6:43 and 1 Corinthians 10:10 show the same conduct in direct prohibitions, and John 7:32 places it among the crowd's speech about him.

   1 Corinthians 10:10John 6:41John 6:43John 6:61John 7:32Luke 5:30

In the Anselm Project Bible: Across the supplied verses, the APB varies between “grumbled,” “grumble,” “murmuring,” and “murmured.” These are verse-level renderings rather than definitions of the individual Greek form.