plural noun
variants: or mullygrubs \ ˈməlēˌgrəbz \ or less commonly mollygrubs \ ˈmäl-​ \

Definition of mulligrubs

1 : a despondent, sullen, or ill-tempered mood : sulks, blues
2 : a griping of the intestines : colic

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History and Etymology for mulligrubs

alteration (probably influenced by grub) of earlier mulliegrums, perhaps alteration (perhaps influenced by obsolete English mully dusty, moldy, from English mull entry 1 + -y) of megrims, plural of megrim entry 1

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to gather or build up little by little

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