Ever decreasing, it looks a bit queer (3)
I believe the answer is:
eer
'ever' is the definition.
(synonyms)
'decreasing it looks a bit queer' is the wordplay.
I cannot quite see how this works, but
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found in the answer.
The remaining letters 'er' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for eer that I've seen before include "Always (poetical)" , "Always (poetic)" , "Ever to the poet (3)." , "Before, poetically speaking (1'2)" , "Ever poetically" .)