sound of thin metal or plastic surface caving in and springing back;  action of quickly bowing or lowering one's head;  (with a) bob of the head
 to bow;  to bow one's head;  to apologize;  to apologise;  to bow to;  to yield to
 to be bewildered;  to be perplexed
 bewilderment;  perplexity;  embarrassment;  discomfiture;  bafflement
 to exchange glances;  to look at each other;  to postpone;  to put off;  to contrast;  to compare
 action;  conduct;  behaviour;  behavior;  mobilization;  mobilisation
 vigilance;  caution;  alertness;  precaution;  being on guard
 to untie;  to unfasten;  to unsew;  to unstitch;  to solve;  to work out;  to dispel (misunderstanding, etc.)
 and;  thereupon;  because of that
 idea;  thought;  discretion;  forgiveness;  pardon
 to try and do something;  to attempt to do something
 always;  all the time;  never;  usual;  regular
 sensation;  feeling;  tendency;  propensity
 to turn one's face;  to turn around;  to look over one's shoulder
 dubious;  puzzled;  suspicious
 here;  this place;  this point;  here;  these past ... (e.g. three years);  these last ...
 misunderstanding;  mistaken idea;  wrong guess
 buzz;  hum;  shake (with vigor);  shaking
 lie;  fib;  mistake;  error;  unwise move;  bad decision
 lovely;  wonderful;  nice;  great;  fantastic;  superb
 how;  in what way;  how about
 quite indifferent;  looking blank;  looking as though one has nothing at all to do with what is going on
 not only ... (but also);  not merely;  as well as;  furthermore;  besides;  moreover
 to be packed (with);  to be full (space, schedule, etc.);  to be blocked (road, pipe, nose, etc.);  to be clogged;  to shorten (width, interval, etc.);  to shrink (shirt, word form, etc.);  to be at a loss
 it is ... that ...;  precisely;  although;  while;  it is precisely because ... that ...;  only because ...
 to think of;  to hit upon;  to come into one's mind;  to remember;  to recall
 bread;  (sweet) pastry;  staff of life;  one's bread
 to knock together;  to strike against each other;  to arrange (e.g. a meeting);  to discuss (in advance)
 good thing;  nice thing;  good excuse;  good grounds;  interjection used to impress an idea or to urge a response
 to think (about, of);  to think over;  to consider;  to bear in mind;  to think (that);  to believe;  to intend (to do)
 killing two birds with one stone;  serving two ends
 ground-breaking;  revolutionary;  unprecedented;  epoch-making
 it does not mean that ...;  I don't mean that ...;  it is not the case that
 yes;  yeah;  hum;  hmmm;  oof
 to confute;  to argue down;  to persuade;  to convince;  to prevail on
 to stop;  to turn off;  to park;  to prevent;  to suppress (a cough);  to stop (someone from doing something);  to dissuade
 to tell (somebody) to (do something)
 with a start;  in surprise;  suddenly (realize, remember, etc.);  all of a sudden;  puffing (air);  with a puff
 to work out a plan of deception;  to scheme; (arch.)  to think up a plan; (arch.)  to think over a plan; (arch.)  to discuss; (arch.)  to consult
 hot (thing);  passionate (feelings, etc.);  ardent;  hot (e.g. temper);  zealous;  enthusiastic;  intense
 thought;  imagination;  mind;  desire;  wish;  love
 certainly;  for sure;  distinctly;  clearly;  firmly;  tightly