study; scholarship; learning; discipline; branch of learning; (a) science
specialization; specialisation
national language; Japanese language (esp. as a school subject in Japan); one's native language; mother tongue; native Japanese words (as opposed to loanwords and Chinese-derived words)
science (natural sciences and related fields, incl. mathematics, engineering, medicine, etc.); faculties of science, engineering, medicine, etc. (at a university); science (as a school subject)
society; public; community; social studies
plural; multiple; plural (number)
to set one's hand to; to start work on; to embezzle; to use (money obtained in illegal fashion); to have sexual relations; to have an affair
when; at what time; how soon; normal times; ordinary days
core; heart (of the matter); point; crux; kernel
that much; as much; to that extent; only that; that alone; no more than that
important; serious; valuable; precious; serious matter; major incident
to hit a nerve; to go for the throat; to touch a sore spot
irritating; troublesome; gloomy (e.g. mood); depressing; heavy (weather); cloudy
to groan; to moan; to roar; to howl; to hum (engine, wind, etc.); to buzz; to ooh and aah (in admiration)
to forget; to leave carelessly; to be forgetful of; to forget about; to forget (an article)
reverse; opposite; converse (of a hypothesis, etc.); inverse (function)
good thing; strong point; good family; prestigious school; the right moment; utter
miserable; pitiable; shameful; deplorable; pathetic
to that extent; to that degree; so much; so
to be at a loss; to be puzzled
to lament; to grieve; to regret; to deplore
having many difficulties in store; grim prospects
sympathy; compassion; pity
root; source; origin; foundation; basis; essence
main cause; primary factor
hair; fur; wool; down; plumage
if anything; if pushed I'd say; if I had to say
third party; third person; outsider; disinterested person
expression; representation; description; representation (of a group)
joint; knuckle; tune; melody; node (of a plant stem); joint
frank; direct; plain; straightforward; point-blank; concise
association; socializing; socialising; fellowship
tail (of an animal); tail end; tip
unfortunately; regrettably
experience; history; record; career
equal; equivalent; equals sign; equality sign; equals (as in "A equals B")
woman's heart; female instincts or psychology
that's good; that's nice; like (on social media); is that clear?; OK?
even if; even though; although one might say; although called
called; known as; that; to say
question (e.g. on a test); problem; problem (e.g. societal, political); question; question (i.e. doubt); public discussion
elementary level; beginner level
compilation (of a text); editing; volume (of a text); completed literary work
to be in a hurry; to be impatient; to be anxious (to do); to get a fright; to panic; to get flustered
to stand in (someone's) place; to be in a (certain) position