/ bɪˈsɒtɪd; NAmE -ˈsɑːt-/ adjective
besotted (by / with sb/sth) loving sb/sth so much that you do not behave in a sensible way :
He is completely besotted with his new girlfriend.
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WORD ORIGIN
late 16th cent.: past participle of besot make foolishly affectionate , from be- cause to be + sot someone who is usually drunk .