One so confused may be caught by it (5)
I believe the answer is:
noose
'be caught by it' is the definition.
I can't judge whether this definition defines the answer.
'one so confused' is the wordplay.
'confused' is an anagram indicator.
'one'+'so'='oneso'
'oneso' is an anagram of 'NOOSE'.
'may' acts as a link.
Can you help me to learn more?
(Other definitions for noose that I've seen before include "Loop - snare" , "Loop with running knot" , "Cord snare" , "Hangman's equipment" , "Loop at the end of a rope" .)