Stupendous, having to tilt (5)
I believe the answer is:
upend
'tilt' is the definition.
Both the definition and answer are verbs in their base form.
Maybe they are linked in a way I don't understand?
'stupendous having' is the wordplay.
'having' indicates a hidden word.
'UPEND' can be found hidden inside 'stupendous'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for upend that I've seen before include "Tip on side" , "Tip right over" , "Turn upside down" , "Flip" , "Turn upside-down" .)