/ ˈmɔːbɪd; NAmE ˈmɔːrbɪd/ adjective
1.
having or expressing a strong interest in sad or unpleasant things, especially disease or death :
He had a morbid fascination with blood.
'He might even die.' 'Don't be so morbid.'
2.
( medical ) connected with disease
► mor·bid·ity / mɔːˈbɪdəti; NAmE mɔːrˈb-/ noun [ U ]
► mor·bid·ly adverb
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WORD ORIGIN
mid 17th cent. (in the medical sense): from Latin morbidus , from morbus disease.