1. Humility (5)
2. Explanation (7) [Have ?????n? - is it account?]
3. Mythical creature (7) [Have ?????i? - is it griffin or gremlin?]
4. Part of body (4) (If its griffing and account it will be foot)
5. But that would mean that humility is ?r?c?. Curiouser and curiouser.
The 'i' and the 'n' come from 'concentration' - answer to accumulation (9)
Any help will be greatly appreciated, and comes with Thanks in advance.
Entered my thanks to you with a space between Chelle & 7272 initially, so they probably didn't get to you. Herewith amended entry and greatful thanks: grace seems to fit perfectly.