Dm Q

[flyfish]

18a ramshackle hut (6) 20a severe or harsh (10) your help please

[emmie]

do you have any letters at all?

[boxtops]

any letters so far?

[Baldric]

shanty ?

[cupid04]

shanty
astringent

[factor-fiction]

stridulous?
Having even one letter makes a big difference

[Baldric]

Remember: Not everyone will have a copy of the crossword in front of them, so please write the clue EXACTLY as it appears, the number of letters required and which (if any) you already know e.g.
Excellent on-line resource for answering questions (10) A?SWE?B?NK

[flyfish]

thank you all

[emmie]

if you have some letters next time, can you post them, it really helps.