special characteristic; special quality; trait; idiosyncrasy; peculiarity
book; document; calligraphy (esp. Chinese); penmanship; handwriting; letter
strict; severe; stringent; rigorous; rigid; firm
control; management (e.g. of a business)
reason; circumstances; grounds; because of; due to; as a result of
name; given name; first name
simple; easy; uncomplicated; brief; quick; light
with a bang bang (e.g. repeated sound of a hammer or gunfire); at a mad pace; with great vigor
considerably; greatly; a lot
consideration; inquiry; enquiry; investigation; study
easy; likely to ...; have a tendency to ...; easy to ...
hmmm; uh-huh; murmur indicating approval, comprehension, etc.
I see; that's right; indeed
number of times; frequency; count
restriction; restraint; limitation; limit
power; might; authority; influence
extent; scope; sphere; range; span
anyone; anybody; everyone; everybody; whoever
utmost limits; extremity; limit
making efficient; optimization
foot of a mountain; plain at the foot of a mountain; range; spread; extent
to spread (out); to extend; to stretch; to reach to; to get around; to fill (e.g. a space)
by extension; in turn; by the same token; in addition; as well; consequently
vertex; apex; top (e.g. of a mountain); summit; top (of a profession, field, etc.); summit
to stand (up); to rise; to stand (in a position; of a person, tree, building, etc.); to be situated (in, on); to be (in difficulties, the lead, etc.); to put oneself (in a position or situation); to leave (to do something)
for this very reason; that is exactly why
idea; conception; way of thinking; approach; expression
whole; entirety; to begin with; in the first place; ... the heck (e.g. "what the heck?"); ... in the world (e.g. "why in the world?")
leveling up; raising the level (of); boosting; improving; improvement; rising to the next level
a great variety of; diversity
(distant) future; future existence; world beyond the grave; future (tense)
light; bright; bright (colour); cheerful; bright; bright (future, prospects, etc.); rosy
gentle; quiet; mild; quiet (color, pattern, etc.); sober
perhaps; possibly; by some chance; by some possibility
contents; content; substance; matter; detail; import
wise; clever; smart; well-behaved (esp. children and pets); obedient; good
child; kid; (one's) child; offspring; young woman; young (animal); offshoot
so; therefore; accordingly; consequently; on those grounds; that is why
probably; (most) likely; in all likelihood; I suspect; I dare say; I'm afraid
comparatively; relatively; fairly; considering ...; for ...; despite ...
but (still); and yet; nevertheless; even so; notwithstanding