also: いづれ
いずれの方法が最適でしょうか。
Which method would be the most suitable?
Which country are you from?
Used in the patterns いずれも or いずれの...も to mean 'all' or 'both' of the options. Slightly formal.
Both proposals have their pros and cons.
All the applicants were excellent.
anyway; in any case; at any rate
Adverbial use meaning 'in any case' or 'anyway'. Often used to shift the topic or to emphasize that something is true regardless of circumstances.
In any case, we have to decide by the end of today.
Anyway, let's meet again sometime.
sooner or later; eventually; someday
Adverbial use meaning 'sooner or later' or 'eventually'. Implies that something will happen in the future, though the exact time is uncertain.
The rain will stop sooner or later.
The truth will come out eventually.
Both proposals are worth considering.
The truth will come out eventually.
I want to go to Japan someday.
いずれ is a slightly more formal way of saying 'eventually/at some point', often implying it is bound to happen, whereas いつか is more casual and open-ended.
Rare kanji form; learners should use the kana spelling.
Very rare kanji form; not recommended for active use.