Different from the inside or outside (5)
I believe the answer is:
other
'different' is the definition.
(similar in meaning)
'from the inside or outside' is the wordplay.
'from' becomes 'he' (I am not sure about this - if you are sure you should believe this answer much more).
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'inside' means one lot of letters goes inside another.
'outside' indicates putting letters inside.
't' inserted within 'or' is 'otr'.
'he' put within 'otr' is 'OTHER'.
Can you help me to learn more?
(Other definitions for other that I've seen before include "Different (from those mentioned)" , "Very unusual" , "Different, disparate" , "Different; additional" , "not like you" .)