defense; defence; safeguard; protection
transmission (e.g. news, chemical signals, electricity); communication; delivery; conveyance; transfer; relay
accomplishment; execution
proficiency; mastery; becoming proficient (in)
to carry to extremes; to go to the end of something; to investigate thoroughly; to master
to attract; to draw near; to charm; to attract; to have a convulsion
pair; the two; both persons; both things
to begin to appear; to begin to come in
most difficult; next to impossible
to abandon; to give up on; to desert
ought to do; have to do; must do; feel obliged to
event; phenomenon; matter
butterfly effect (chaos theory)
n-body problem; many-body problem
elucidation; explication; explaining; unravelling; clarification; understanding
participation in a war; going to war; taking part in a competition or contest
difficult to understand; unintelligible; abstruse
solid; firm; steady; unshakeable; unwavering
to curl oneself up; to squeeze oneself in; to be huddled
to warn against; to caution against; to admonish; to scold; to prohibit; to forbid; (arch.) to be cautious
the future (usually distant); future tense; the world to come
approximation; having a close resemblance
stale; old fashioned; hackneyed; trite; antiquated; obsolete
agglutination; adhesion; fusion; combination; blending; uniting
to push (a thing) out; to jut out (can have a negative nuance); to protrude; to rise out the trap door (on stage)
smoky; awkward; ill at ease
deformity; malformation; strange shape; unusual shape