un ‧ due /ˌʌnˈdjuː◂ $ -ˈduː◂/ BrE AmE adjective [only before noun]
[ Word Family: adverb : ↑ due , ↑ duly , ↑ unduly ; noun : ↑ due , dues; adjective : ↑ due , ↑ undue ]
formal more than is reasonable, suitable, or necessary:
De Gaulle felt that America had undue influence in Europe.
undue pressure/stress/strain etc
Exercise gently and avoid putting yourself under undue strain.
The kick should be taken without undue delay.