English
gruntspeak
From grunt + -speak.
Formed from grunt + -speak
Proto-Indo-European *gʰrun- ‘to shout’
…
Proto-Germanic *grunnatjaną ‘to grunt’
Proto-West Germanic *grunnattjan ‘to grunt’
Old English grunnettan ‘to grunt’
Middle English grunten ‘to grunt or groan as or like an animal’
English grunt
Today it means
noun The slang used by infantry soldiers.
Language periods are conventional ranges, not dates for this word.
Etymograph / gruntspeak