pick me up

[JDCOOL]

5A terrible, dreadful ???S???
6D narrow-minded ??I?I?R?D
8D synthetic fibre ??R?T?C

any help would be appreciated

[Harry-Wragg]

8d acrylic ?

[mac44]

5a. Ghastly?

[flicrat]

6d. Blinkered?

[jjo1958]

5a Abysmal

[flicrat]

Has jd gone to bed? I wait with bated breath to hear how all these fit together and whether some of these answers will alter some of his/her given letters!