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fixed/ definitive ( ?a?d ??? ????)
one more (???????)
hefty thump ( ?A????)
protector (?E?E????)
more tidy (??????)
more xmoothly (????)
organised (????d????)
see through (???n?????n?)

hard and fast
another
wallop
defender
transparent
these might help with some of the clues and might give you some letters towards the others

more tidy could be neater