Sunday Express Skeleton Crossword 12Th May

[Frustrate]

Hi folks.already struggling this week. Could anyone help with...
5d "hasty Taoist sort, in other words" (4 words) 11 letters
1a "Tom and Chester get on" 5 letters
I think 4d is "rib-tickling" but clue is "funny bone making clicking noises a student caught (hyphenated) 11 letters. Is my answer correct please?
Hope you can help. Frustrate

[Sam1960]

5. that is to say (anag)

[Sam1960]

1. catch

[Sam1960]

4d. rib-tickling looks good

[Davemano]

Rib(bone) with TickLing.

[Frustrate]

Many thanks Sam60 & Davemano. Can you help with 21a "usurer a variable left appalled" 7 letters s??????
9a " something washed in a city bar goes back" 7 letters ??????b. Will get my old brain in gear sometime!

[fiction-factory]

shYlock

[fiction-factory]

that's Y (variable) and L in SHOCK

[dannyk13]

21a.Shylock
9a.Bathtub

[fiction-factory]

Regarding shylock, I'm not convinced that appalled= shock. (Should have been appal shouldn't it?)- shock as but thesaurus does indeed have appalled and shock as ynonyms
https://www.thesaurus.com/browse/appalled

[fiction-factory]

^ not sure what happened with typing there