is something that; is that which
year; age; years; past one's prime; old age
until now; till now; up to now; up to the present; so far
discomfort; inconvenience; poverty; want; inability; disability
test (of ability, knowledge, etc.); exam; test (of performance, quality, etc.); trial; rehearsal
to open one's mouth (to talk); to (start to) tell
different planet; another planet
reciting (to oneself); repeating (e.g. an order, to confirm one heard it correctly)
everyday conversation; day-to-day conversation
feeling refreshed; feeling relieved; neat; tidy; frank; open-hearted; completely
to often be the case; to occur frequently; to be common; to be popular
interpretation; explanation; reading; construction
first of all; at once; for now; for the time being; anyway; at least
personal; individual; private
guinea pig (Cavia porcellus); subject of an experiment; (human) guinea pig
item; heading; category; headword (in a dictionary, encyclopedia, etc.); entry
one's origin (e.g. city, country, parentage, school)
solar day (esp. on planets other than Earth); sol (currency of Peru)
to lay aside; to set aside
what's the matter?; what's wrong?
price; cost; value; worth; value
very interesting; of great interest
that is to say; so that means
special; particular; peculiar; unique
undeveloped (area); unexplored (field of study); wild (areas); untapped area
frontier (esp. the American frontier); frontier (of a field); forefront (of science, technology)
to overflow; to brim over; to flood
judgment; judgement; divination; judgement
advantage; benefit; merit; good point; plus
excitement; stimulation; agitation; arousal
to fly; to soar; to jump; to leap; to spatter; to scatter; to hurry
softly; gently; stealthily; secretly; to leave alone; to leave as it is
pause; interval; distance; range; suitable time; appropriate opportunity
disadvantage; drawback; demerit; bad point; minus
to leak out; to escape; to find expression; to give vent; to leak out; to be divulged
another place; somewhere else; outside (one's family or group); someone else; not caring for; being indifferent to
medical examination (for a specific condition or disease); health screening
recommendation; advice; suggestion; encouragement
unskillful; poor; awkward; imprudent; untactful
to be hit; to strike; to touch; to be in contact; to be equivalent to; to be applicable; to be right on the money (of a prediction, criticism, etc.)
to receive; to take; to get someone to do something; to have in one's pocket (a fight, match); to contract (a disease); to catch