deserted (esp. store, market, town, streets);  quiet;  inactive (business, trade, etc.);  slack;  idle;  free
 quiet (e.g. neighbourhood);  peaceful;  tranquil
 tranquil;  calm;  quiet;  peaceful
 spare time;  free time;  leisure
 Now let's return to the main subject;  To return from the digression,.. (in a conversation, speech, or story-telling)
 spare time;  free time;  time (e.g. time it takes to do something);  time off;  day off;  quitting (one's job)
 silent;  still;  quiet;  hushed
 leisurely post;  do-nothing job;  sinecure
 to be quiet (due to lack of activity);  to be in a slump (of a business)
 relaxed;  easygoing;  leisurely;  nonchalant (during an emergency);  unconcerned;  unperturbed
 silent;  still;  quiet;  hushed
 quiet;  peaceful;  tranquil
 quiet conversation;  gossiping;  idle talk
 person with a lot of free time on their hands;  person of leisure;  idler;  loafer
 quiet and secluded life;  quiet retreat;  idle life
 slack season for farmers;  leisure season for farmers
 neglect;  negligence;  disregard;  making light of
 quiet conversation;  idle talk
 composed and unhurried;  easygoing and leisurely;  in indolence
 peaceful;  quiet;  tranquility;  tranquillity
 quiet;  silent;  slow;  unhurried;  calm;  peaceful
 off period;  off season;  slack season
 short interval of leisure;  short break or breather;  lull
 quiet place;  vacant land;  fallow ground;  undemanding job;  sinecure;  life of leisurely retirement
 press and slack of business
 an idle brain is the devil's shop
 there are brief moments of leisure even when at one's busiest
 a small-minded person being idle (tends to do evil)
 an idle brain is the devil's shop
 idle words (in a written passage);  useless words;  empty words
 life in natural setting, free from worldly cares
 toilet;  lavatory;  quiet place
 plain;  frank;  candid;  open;  direct;  straightforward
 quiet conversation;  gossiping;  idle talk
 to be quiet (due to lack of activity);  to be in a slump (of a business)
 composed and unhurried;  easygoing and leisurely;  in indolence
 composed and unhurried;  easygoing and leisurely;  in indolence
 composed and unhurried;  easygoing and leisurely;  in indolence
 short interval of leisure;  short break or breather;  lull
 toilet;  lavatory;  quiet place
 there are brief moments of leisure even when at one's busiest
 tranquil;  calm;  quiet;  peaceful
 having free time to spare in the midst of busyness;  leisure in the intervals of one's work
 aesthetic sense in Japanese art emphasising quiet simplicity and subdued refinement
 tranquil;  calm;  quiet;  peaceful;  peaceable