Seamus drunk? Take as read (6)
I believe the answer is:
assume
'take as read' is the definition.
(I've seen this before)
'seamus drunk?' is the wordplay.
'drunk?' indicates anagramming the letters (I've seen 'drunk' mean this).
'seamus' anagrammed gives 'ASSUME'.
(Other definitions for assume that I've seen before include "Suppose - appropriate - feign - adopt" , "Take for granted or take upon oneself" , "Be arrogant" , "Claim without justification" , "Suppose; put on" .)