Hi Jolan
Another set of thought provoking clues -
1) TENDERFOOT - Novice...TENDER (painful)
FOOT (bottom)
2) APPEAR - Crop up ....AP (Pa/pop back) PEAR (fruit)
3) KNOCKWURST - Foreign food...KNOCK (condemn) WURST ( sounds like/ reportedly) WORST which oddly can mean Best!
4) XENON - Element ..anag (change)EXILE ANNOUNCED less (excluding) EUCLIDEAN.
5) SAFEGUARDING - Preserving ...anag (unusually) DEAR FUNGI in SAG (bag)
Jolan I'm not sure how 'rigorous' in 4) helps the clue, as I took 'change' to be the anagram indicator? Am I missing something - wouldn't be the first time!
Thanks
Tony