Extended picnic? (9)
(Other definitions for outspread that I've seen before include "Scattered" , "Fully extended" , "Wide apart" .)
'extended picnic?' is the definition.
'spread out' can be an answer for 'extended' (thesaurus). I am not certain of the 'picnic?' bit.
'extended picnic?' is the wordplay.
'extended' becomes 'spread' (synonyms).
'picnic?' becomes 'out' (I can't explain this - if you can you should give a lot more credence to this answer).
'spread'+'out'='SPREAD OUT'
Can you help me to learn more?
(Other definitions for spread out that I've seen before include "Move so as to cover a wider area" , "move apart" .)