boundary; (nuclear) criticality; critical (mass, pressure, temperature, state, point, etc.)
bounds; limits; boundary fence (esp. of horse-riding ground)
weak; feeble; delicate; frail; helpless
great numbers; numerical superiority
numerical inferiority; being outnumbered
luxury; extravagance; to live in luxury; to indulge oneself; lavish (use of something); abundant
expresses a firm view or feeling; please ...; would you ...
to gulp down; to swallow deeply; to understand; to take in; to engulf; to swallow up
good performance; good work; great success
preliminary inspection; having a look in advance; preparatory read-through (e.g. of lesson notes); siding (on a house); clapboard
to check; to hold back; to keep at bay; to stop; to prevent; to stem
knowledge; awareness; consent; acceptance; forgiving; pardoning
persistent; obstinate; tenacious; relentless; insistent; importunate
true character; true form; true colors (colours); consciousness; one's senses
preventing (someone) from leaving; confinement; keeping indoors; being stranded; grounding
iron (Fe); strong and hard (as iron); railway; railway enthusiast
branch; bough; limb; twig; sprig; spray
root (of a plant); stump (of a tree); root (of a problem, etc.); base
to become overgrown; to grow thick; to spread; to run rampant; to thrive
objet d'art; item of artwork; object; curio
elevator; lift; elevator (aviation)
intently; single-mindedly; devotedly; solely; earnestly; with all one's heart
parched; dried-up; empty; hollow; rattling; clattering
tongue; tongue-like object; clapper (of a bell); talon (of a lock)
to pick out item(s) from a group to keep
lie; falsehood; fiction; fabrication
to pile up; to stack up; to accumulate
there is no way that ...; easy; simple
gradually; by degrees; little by little; steps; stairs; staircase
goodbye; so long; saying goodbye to (e.g. life as a bachelor); putting an end to; farewell (performance, party, etc.); final
helper; supporter; second; foreign player (hired to strengthen a team)
honest to a fault; foolishly honest; naively honest
negligence; carelessness; inattention; unpreparedness
boorish; inelegant; unpolished; unromantic; tactless
absent-mindedly; vacantly; idly; lazily
there; that situation; that occasion; the spot (i.e. "on the spot"); immediately; then and there
cavity; hollow; void; hollow (voice, smile, etc.); blank (eyes, look, etc.); vacant (expression, stare, etc.)
sleepwalking; somnambulism; noctambulism