I got an invitation to a party tonight that I know would be a lot of fun but I have to be in my best form for tomorrow's meeting so I had to turn it down.
Examples (粵典–words.hk)
Cantonese
佢假托有病,推辞咗个晚宴。
佢假託有病,推辭咗個晚宴。
He decline our invitation on the pretext of sickness.