Common noun

thing; matter

Common noun

incident; occurrence; event; something serious; trouble; crisis

Common noun

circumstances; situation; state of affairs

Common noun

work; business; affair

Common noun

after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to

Noun, used as a suffix

nominalizing suffix

Noun, used as a suffix

pretending to ...; playing make-believe ...

Common noun; As aことb (a = alias, b = real name)

alias; also known as; otherwise known as; or

Common noun; As 〜ことはない

necessity; need

Common noun; As 〜ことだ

you should ...; I advise that you ...; it's important to ...

Noun or participle which takes the aux. verb suru; Intransitive verb

work; job; labor; labour; business; task; assignment; occupation; employment

Physics

work

Usu. sentence ending

to have been decided (so) that; to have been arranged (so) that

to be the result (of); to be the outcome

to be the reason (for)

Usu. verb+ことが...

to be able (to); to be possible (to)

Godan verb with 'ru' ending (irregular verb); After the past tense form of a verb

(for something) to have occurred; to have done (something)

Godan verb with 'ru' ending (irregular verb)

(for something) to happen on occasion

Adjectival nouns or quasi-adjectives (keiyodoshi)

important; serious; crucial

Adjectival nouns or quasi-adjectives (keiyodoshi)

valuable; precious

Common noun

serious matter; major incident; matter of grave concern; crisis

Common noun

great undertaking; great enterprise; great thing

Adjectival nouns or quasi-adjectives (keiyodoshi); Tochigi dialect

safe; OK

to decide to

After the past tense form of a verb

to pretend that

As 〜ことにしている

to make a practice of doing; to make it a rule to

there is no need to ...

never happens; there is never a time when

fact; truth; reality

event; affair; incident; case; plot; trouble; scandal