grun·tle verb \ˈgrən-təl\
grun·tledgrun·tling \ˈgrənt-liŋ, ˈgrən-təl-iŋ\
: to put in a good humor <were gruntled with a good meal and good conversation — W. P. Webb>
Origin of GRUNTLE
back-formation from disgruntle
First Known Use: 1926
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