knowingly or unknowingly; with or without someone's knowledge
dissidents; troublemakers; disturbing elements
concealment; hiding; ambush; incubation; latency; dormancy
separate case; another matter; different matter; another project
(any) particular; special; particularly noteworthy; worth mentioning
trace; vestige; mark; sign; evidence
manager; administrator; landlord; root (user)
younger brother; little brother; brother-in-law (spouse's younger brother or younger sister's husband); (arch.) pupil; (arch.) apprentice
present (e.g. government, administration); current; existing
to antagonize; to provoke antipathy
to push in; to force into; to break in (e.g. into a house); to intrude
to finish; to get it over with; to settle; to pay back; to get along (without something); to make do with (without)
regular customer; general audience; general public
to dress (oneself in); to attire oneself in; to adorn; to pretend; to feign; to affect
first of all; to begin with; probably; most likely; more or less (satisfactory); on the whole
infiltration; sneaking in; going undercover
user; end-user; consumer; patron; customer; client
to find a way; to find the time; to try to make oneself available
to step on; to tread on; to set foot on (e.g. foreign soil); to stand on; to experience; to undergo; to follow (rules, principles, etc.)
(written) invitation; letter of invitation
well done!; good job!; good work!; you did it!; bravo!
this occasion; at this time; now
consideration (for); thoughtfulness; solicitude; care; watchfulness; concern
height; acme; extremity; end; limit
eerie; hair-raising; exaggerated; ostentatious
to have one's horizons broadened
sparse; thin; scattered; straggling; sporadic
interior (of building, room, vehicle, etc.); interior design
direction (of a play, film, etc.); production; organization (of an event); arrangement; staging (for effect)
ghost; specter; spectre; apparition; phantom
aspect; phase; condition; modality
to be unable to just watch (without doing anything); to be unable to look on in silence; to be unable to overlook; to be unable to remain indifferent to
kindness; favor; favour; goodwill; affection; liking (for someone)
goal (in soccer, hockey, etc.); basket (in basketball); finish line; finishing line; reaching the finish line; finishing (a race)
trick that may deceive a child; transparent ploy; mere child's play; trivial (e.g. scheme); transparent; trifling (e.g. matter)
play; playing; pleasure; amusement; play (in a mechanism, e.g. a steering wheel); slack
to miss (e.g. a chance); to lose; to set free; to let go; to fail to ...
anywhere; for all time; through thick and thin; come hell or high water; persistently; stubbornly
to crush (with one's hands); to kill a proposal; to shelve; to table (remove from consideration)
anguished; distressed; worried; horny
to be caught; to be arrested; to hold on to; to grasp; to find (e.g. proof); to get (e.g. a taxi)
to spring at; to leap upon; to swoop down on; to throw oneself upon (e.g. an enemy)
making frequent appearances; appearing often; appearing and disappearing
unable to stay still; unable to contain one's feelings; unable to restrain oneself