Dough.
Dough Though Plough
The word "through" rhymes with "stew" and ends in -ough.
Plough
Tough
scruff
Beau Blow Toe
Breakthrough, clickthrough, feedthrough, readthrough, walkthrough,
show
For words that rhyme with "tough" and end in "ough," you could consider "rough" or "slough." These words share a similar sound pattern.
Through. Pronounced like threw, but means something like: you can go through this way or something like that.
scruff
enough