- gruntle (v.)
[gruntle 词源字典]
- 1938, in gruntled "pleased, satisfied," a back-formation from disgruntled. The original verb (early 15c.) meant "to utter a little or low grunt," hence "to murmur, complain" (1580s), but was rare or dialectal by 19c.[gruntle etymology, gruntle origin, 英语词源]