modality N4 common casualpolitewritten

ことに決める — decide to ~

ことに決める ・ ことにきめる
Builds on こと ことにする

Meaning

Key sentence

I made up my mind to study economics at university.

Formation

Attaches toFormExample
verb (dictionary / negative) V(dict)／V-ない + ことに決きめる 学まなぶことに決きめる / 会あわないことに決きめる

Examples

I've decided once and for all not to see him again.
I took the plunge and decided to buy a house.
I've resolved to save a certain amount each month.

Easily confused with

ことにする Almost interchangeable. ことにする is the everyday 'decide to'; ことに決きめる uses the explicit verb 決きめる ('decide'), foregrounding the act of resolving and sounding more emphatic and final.

See ことに決める in real sentences

Jengo shows ことに決める the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.

Study it in Jengo

Sources Compiled with reference to A Dictionary of Basic Japanese Grammar.

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