Crossword Genius

Unreasonable aliens spun a record (5)

Ross

I believe the answer is:

steep

'unreasonable' is the definition.
(thesaurus)

'aliens spun a record' is the wordplay.
'aliens' becomes 'ETs' (ET is short for extraterrestrial).
'spun' says the letters should be written in reverse.
'a record' becomes 'EP' (abbreviation for extended play record).
'ets' back-to-front is 'ste'.
'ste'+'ep'='STEEP'

(Other definitions for steep that I've seen before include "Rapidly rising" , "Hard for cycling" , "Soak; expensive (price)" , "Unreasonably dear - soak" , "Marinate" .)

I've seen this clue in The Daily Express.
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