Regarded as being singularly like the Cyclops (4)
I believe the answer is:
eyed
'regarded' is the definition.
(I've seen this in other clues)
'being singularly like the cyclops' is the wordplay.
I cannot really see how this works, but
'like' could be 'y' (similar in meaning) and 'y' is found in the answer.
The remaining letters 'eed' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'as' acts as a link.
Can you help me to learn more?
(Other definitions for eyed that I've seen before include "Spotted" , "Looked at closely" , "examined" , "Closely observed" , "Watched, looked at" .)