以い後ご

い

ご

Common wordJLPTN3Freq.FrequencyTop 10,000

Meanings

1

Refers to a point in time after the present or a specified reference point; often used in formal or written contexts.

気き

を

つけ

ます

。

I'll be careful from now on.

午ご後ご6時じ以い後ごは電でん話わに出でられません。

I cannot answer the phone after 6 p.m.

2

Used after a specific event or time expression, especially after あれ, それ, or the -te form of a verb, to mean 'after that' or 'since then'.

〈時とき〉以い後ごfrom/after a specified time onward
卒そつ業ぎょう以い後ご、彼かの女じょとは一いち度ども会あっていない。
I haven't met her even once since graduation.
それ以い後ごsince then; thereafter
彼かれはそれ以い後ご、一いち度ども遅ち刻こくしていない。
He hasn't been late even once since then.

以い降こうN3
以降 is the more common, everyday word for 'after/since', while 以後 sounds slightly more formal and appears in set phrases or written notices.
今こん後ごN3sense 1
今後 specifically means 'from now on' looking forward from the present, while 以後 can also refer to a point after any specified past reference.
その後あと sense 2
その後 is a casual, conversational way to say 'after that', while 以後 in this sense is used in more formal or written narration.
以い来らいN3
以後 simply means 'after' a point in time and can describe future events too, whereas 以来 emphasizes an unbroken continuation from a past event up to the present.
年ねん後ご
年後 marks a point a certain number of years after a reference event, while 以後 more broadly means 'from that point on' without specifying years.

以い前ぜんN3
以前 means 'before' a point in time, the direct opposite of 以後, which means 'after' it.

以い内ないN4
以内 means 'within (a limit)', not 'after'; learners confuse it with 以後 because both start with 以 and involve time or quantity ranges.

以い後ごUsage100%
Standard kanji form; high-frequency in news and general use.
已い後ごUsage<1%
rarely-used kanji form
Rarely used kanji form; 已 is an older variant of 以.

Compound of 以 (i, 'from') and 後 (go, 'after'). The kanji 已 is an older variant of 以, now rarely used.