<i>Summer is synonymous with picnics and memorable activities outdoors, with good company and delicious food.</i><br/><br/>Is the sentence natural to native English speakers?<br/><br/>I cannot understand especially the use of <b>outdoors</b> in the sentence. What does it modify and is it used as an adverb or noun?<br/><br/>What do you native English speakers think?<br/><br/>Thank you so much as usual in advance!