to put in;  to let in;  to admit;  to accept;  to accept;  to comply;  to include
 pretty;  lovely;  clean;  clear;  completely;  entirely
 thanks to ...;  owing to ...;  because of ...
 water heater;  (domestic) boiler
 interior;  inside;  internal
 to get burned and stuck on (e.g. rice in a pan);  to become uncollectable (e.g. debt or loan);  to become irrecoverable;  to remain unchanged (e.g. stock market)
 just before;  on the verge of;  on the brink of;  just in front of;  just ahead of
 painful;  sore;  cringy;  embarrassing;  exceeding
 occasionally;  once in a while;  now and then;  rarely;  seldom
 change of pace;  change of mood;  (mental) break (e.g. going for a walk);  refreshment
 bad;  poor;  poor (quality);  inferior;  evil;  sinful;  ugly
 motorcycle;  motorbike;  bicycle
 charge;  cost;  generation;  age;  era;  a representative of;  on behalf of
 to take out;  to get out;  to put out;  to reveal;  to submit (e.g. thesis);  to turn in;  to publish
 to receive;  to take;  to get somebody to do something;  to have in one's pocket (a fight, match);  to contract (a disease);  to catch
 no!;  no no!;  no, not at all
 a lot;  lots;  enough;  sufficient;  enough;  too many
 that being the case;  because of ...;  the reason is ...;  given that ...
 some;  any;  in any way;  of some kind;  of some sort
 to feel;  to sense;  to experience
 there is no need to ...;  never happens;  there is never a time when
 -ical;  -ive;  -like;  -ish;  (something) like;  along the lines of
 that way;  that direction;  there;  that (one);  you;  your family
 to hand over;  to transfer;  to give up (e.g. one's seat);  to give way;  to yield;  to concede
 to chase;  to run after;  to follow (a set order, a trend, etc.);  to drive out;  to get rid of;  to drive (e.g. a herd)
 polite;  courteous;  civil;  careful;  close;  thorough
 boo! (sound used to scare someone);  ugh (dissatisfaction, aggravation);  ulp (consternation)
 idiot;  moron;  trivial matter;  folly;  stupid;  foolish
 jungle gym;  monkey bars;  climbing frame
 prefix for forming ordinal numbers
 20 years old; (arch.)  twenty
 school district;  school area
 underground;  below the ground;  world of the dead;  the grave;  underground (activities, movement, etc.);  secret
 development;  evolution;  expansion;  spreading out;  expansion (of an algebraic expression);  development (of a three-dimensional shape)
 power generation facility
 above;  up;  top;  summit;  surface;  before;  previous
 concentration;  focusing;  convergence;  within a collection of works