research establishment;  research institute;  laboratory
 underground;  below the ground;  world of the dead;  the grave;  underground (activities, movement, etc.);  secret
 to seclude oneself;  to shut oneself away
 to come;  to go;  to be (somewhere);  to be (doing)
 what kind of;  what sort of;  what;  no matter what (kind of);  whatever;  any
 change;  variation;  variety;  diversity;  inflection;  declension
 indicates a question;  or;  whether or not;  some- (e.g. something, someone);  hmm;  huh;  very
 myself;  yourself;  I;  me;  you
 intention;  wish;  purpose;  mind (to do)
 here;  this place;  this point;  here;  these past ... (e.g. three years);  these last ...
 to be (of animate objects);  to exist;  to stay;  to be ...-ing;  to have been ...-ing
 conclusion from reasoning, judgement or calculation based on something read or heard;  reason;  cause;  meaning;  circumstances;  situation
 (somebody else's) parents;  both parents
 the expectation is that ...;  the reason is that ...;  the fact is that ...;  the explanation is that ...;  it is that ...
 honorific/polite/humble prefix
 to do;  to undertake;  to send;  to dispatch;  to put;  to move;  to give (esp. to someone of equal or lower status)
 person;  someone;  human beings;  mankind;  human (Homo sapiens);  (other) people;  others
 to kill;  to slay;  to suppress;  to block;  to suppress (a voice, feelings, etc.);  to hold back
 come;  come now;  well;  who knows;  well now;  let's see
 somewhere;  anywhere;  in some respects
 to go;  to move (in a direction or towards a specific location);  to proceed;  to take place;  to pass through;  to come and go;  to walk
 to finish;  to stop;  to close (a business, etc.);  to close down;  to put away;  to put back
 what;  how many;  many;  a lot of;  several;  a few
 outside;  exterior;  the open (air);  other place;  somewhere else
 to play (games, sports);  to enjoy oneself;  to mess about (with alcohol, gambling, philandery, etc.);  to be idle;  to do nothing;  to meet up (with friends);  to hang out
 such;  that sort of;  that kind of;  no way!;  never!
 together;  at the same time;  same;  identical
 before one's eyes;  in front of one;  under one's nose;  immediate;  imminent;  around the corner
 disagreeable;  detestable;  unpleasant;  reluctant
 that;  that thing;  that person;  then;  that time;  that place (over there);  down there (i.e. one's genitals)
 accident;  incident;  trouble;  circumstances;  reasons
 in front (of);  before (e.g. a building);  before;  earlier;  (the) front;  frontal part;  forward
 yes;  that is correct;  understood;  I see;  present;  here;  pardon?
 to cry;  to weep;  to sob;  to howl
 there (place relatively near listener);  there (place just mentioned);  that place;  then (of some incident just spoken of);  that (of point just raised); (arch.)  you
 teacher;  instructor;  sensei;  title or form of address for a teacher, master, doctor, lawyer, etc.;  intimate or teasing form of address; (arch.)  one's elder
 knowing;  (an) acquaintance
 it is assuredly that ...;  can say with confidence that ...
 laboratory;  seminar room;  professor's office