un ‧ du ‧ ly /ʌnˈdjuːli $ -ˈduː-/ BrE AmE adverb formal
[ Word Family: adverb : ↑ due , ↑ duly , ↑ unduly ; noun : ↑ due , dues; adjective : ↑ due , ↑ undue ]
more than is normal or reasonable
unduly worried/concerned/anxious etc
She doesn’t seem unduly concerned about her exams.
It didn’t trouble me unduly.