How to abbreviate Grumble?

The ways to abbreviate Grumble.

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GRMBL:
Grumble(Slang)
For more, try GRUMBLE on ALL ACRONYMS DICTIONARY
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APASmart Define. (2018). grumble. Retrieved September 23, 2026, from http://smartdefine.org/grumble/abbreviations/a
ChicagoSmart Define. 2018. "grumble" http://smartdefine.org/grumble/abbreviations/a (accessed September 23, 2026).
HarvardSmart Define 2018, grumble, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/grumble/abbreviations/a>.
MLASmart Define. "grumble" 19 February 2018. Web. 23 September 2026. <http://smartdefine.org/grumble/abbreviations/a>