phantom; vision; something fleeting; short-lived dream; fabled item; mythical thing
to work on (someone); to appeal to; to make approaches to; to begin to work
average; medium; mid-grade (item); regular grade; same level as; equal to
invincible; unrivaled; unrivalled; matchless; unbeatable; undefeatable
long (distance, length); long (time); protracted; prolonged
to intimidate; to frighten; to scare; to threaten (e.g. peace); to jeopardize; to endanger
with a scraping sound; with a scratching sound; with a crunching sound (while eating)
to train; to teach; to acquire (information); to learn; to stock; to stock up on
shaking; trembling; pitching; disturbance; unrest; agitation
that is (to say); namely; precisely; exactly; if one does ..., then; in that case
attack; assault; criticism; censure; cyber attack (e.g. DDoS)
opposition; rivalry; competition; antagonism
intracerebral; inside the brain; (occurring) in the mind; mental (e.g. image); imaginary
material; substance; matter
operation; management; handling; manipulating (to one's benefit); manipulation; influencing
action; operation; process; agency; effect; function
to deny; to contradict; to negate (esp. a sound); to drown out
to draw (conclusion); to deduce; to derive
conclusion (of an argument, discussion, study, etc.); conclusion
hitting the target; striking home; proving to be right; coming true; being on the mark
guarantee; security; assurance; warranty
accumulation; cumulative; accumulated
origin; source; history; originally; from the start; by nature
science; to think about scientifically; to think in terms of science
mix; mixture; (pre-made) mix; cake mix; mixed; mixed doubles team
research; study; investigation
versus; against; to (e.g. score of 4 to 2, ratio of 3 to 1, vote of 320 to 180); toward ...; to ...; equal footing
war; battle; match; game; competition
trump; trump card; ace up one's sleeve; secret weapon
development; cultivation; application; exploitation (of resources)
considerable; great; important; significant; a big deal
tenacity; persistence; obsession; implacability
to represent; to signify; to reveal; to show; to express; to make widely known
to give (an example); to list; to summon up (e.g. all of one's energy); to gather; to arrest (a criminal); to capture; to nominate (e.g. for a position)
restraint; restriction; fetters; binding; confinement with rope
completely; thoroughly; decisively; unsparingly; beyond recognition; until there's no untouched (undamaged) part
base (of a plant, tree, pillar, etc.); (part near the) root; roots (of one's hair); root (e.g. of a problem); source