Way, way, way at the back showing shyness (7)
I believe the answer is:
modesty
'shyness' is the definition.
(thesaurus)
'way way way at the back' is the wordplay.
'way' becomes 'mode' ('mode' can be a synonym of 'way').
'way' becomes 's' (Compass direction - South).
'way at' becomes 'yt' (I can't justify this - if you can you should believe this answer much more).
'the back' is a reversal indicator.
'yt' in reverse letter order is 'ty'.
'mode'+'s'+'ty'='MODESTY'
'showing' is the link.
Can you help me to learn more?
(Other definitions for modesty that I've seen before include "Freedom from vanity" , "Unassuming character" , "Way to get disorderly house under" , "lack of vanity" , "Decorum, shyness" .)