From Longman Dictionary of Contemporary Englishsit back phrasal verb1 RELAXEDto get into a comfortable position, for example in a chair, and relax Sit back and relax – I’ll open a bottle of wine.2 RELAXEDto relax and make no effort to get involved in something or influence what happens Don’t just sit back and wait for new business to come to you. → sit→ See Verb table
Examples from the Corpus
sit back• The thick pungent smoke from the spliff filled the car in no time as Firebug took long leisurely tokes and sat back.• He sat back and exhaled deeply.• The Baggies people could not just sit back and watch all this happen.• But no one can sit back in investment clubs and just listen.• You can not sit back in your little room writing a nice romantic story about loving couples.• Mel sat back on the couch and admired the view of the city.• Willie sat back on the pouffe and traced his finger over the pictures.• Just sit back, relax, and enjoy the music.• She heard him returning just as she sat back to admire her handiwork.sit back and• Does this mean we should sit back and do nothing?• I just sit back and let the Maine get the credit of it.• You can just sit back and read the responses and decide the winner in your own sweet time.• They just sit back and relax.• Later when the video is finished they will all sit back and view each of the attempts and learn from the mistakes.• That was precisely what women had done in the past - sit back and wait for men to make the running.• It is not smart politics to sit back and wait for presidential vetoes and proclamations to bail us out of every jam. 