Ridiculously simple preamble I rehash, avoiding repetition - that'll make you blink (10)
I am sure the answer is BLEPHARISM -an eyelid spasm.
There is an anagram somewhere in there?...
The clue is - Chilean politician in Brazilian port on sub sbmerged in the drink? (8.7)
The answer is Salvador Allende - Chilean leader.
How does the rest of the clue work please?...
All solutions have the letters ART or TRA in them- 36) The American bean, town steamer, fisherman played by Curtis (3.6.9) 48) Infection diagnosed, but Garfunkel was taken back to hospital in a coma...
Words include either of these letters.
23) Vicarage accommodates a knave after priest closed flight path (10)
70) Singers you hear start back around 10,000 ft.up (11)...