N3 — outside your level filter

に違ちがいない

にちがいないni chigainaiN3neutral

savor + must be

ajiwau ni chigainai

must be; surely is (a confident conclusion)

meaning: must be

Same meaning

味あじわう
〜に違ちがいない
味あじわうに違ちがいない

この味あじ、絶対ぜったい手作てづくりに違ちがいないよ。

kono aji, zettai tezukuri ni chigainai yo.

This taste — it's got to be homemade. casual

あの慌あわてた様子ようすからすると、彼かれは何なにか隠かくしているに違ちがいない。

ano awateta yousu kara suru to, kare wa nanika kakushite iru ni chigainai.

Judging by how flustered he looked, he must be hiding something. neutral

Same meaning15

probably; might; should be

だろうprobably; I suppose (plain style)attaches at
でしょうprobably; I suppose; right?attaches at
はずだshould; ought to; is supposed toattaches at
かもしれないmight; may possiblyattaches at
かなI wonder; maybe (wondering aloud)attaches at
かねないcould well (and it wouldn't be good); there's a real chance thatattaches at
まいsurely won't; I shall never — the classical negative of だろう and of （よ）うattaches at
ないとも限かぎらないyou can't rule out that it will happen; it may happen anywayattaches at
に決きまっているof course it is; is bound to be — treated as beyond argumentattaches at
に相違そういないbeyond doubt; there is no doubt that (written, formal)attaches at
恐おそれがあるthere is a danger that; is at risk of (something unwelcome)attaches at
そうもないshows no sign of; doesn't look like it willattaches at
と考かんがえられるit can reasonably be concluded that; is to be regarded asattaches at
と思おもうI think that; in my opinionattaches at
ような気きがするI have a feeling that; it seems to me thatattaches at

All examples4

must be; surely — a confident conclusion, almost no doubt left

この味あじ、絶対ぜったい手作てづくりに違ちがいないよ。
kono aji, zettai tezukuri ni chigainai yo.
This taste — it's got to be homemade. casual
この字じから見みて、書かいたのは先生せんせいに違ちがいない。
kono ji kara mite, kaita no wa sensei ni chigainai.
Judging by the handwriting, the one who wrote it must be the teacher. neutral
あの慌あわてた様子ようすからすると、彼かれは何なにか隠かくしているに違ちがいない。
ano awateta yousu kara suru to, kare wa nanika kakushite iru ni chigainai.
Judging by how flustered he looked, he must be hiding something. neutral
この筆跡ひっせきは被告人ひこくにんのものに違ちがいありません。
kono hisseki wa hikokunin no mono ni chigai arimasen.
This handwriting must belong to the defendant. formal

How it's formed3

All forms2

pastに違ちがいなかったnichigainakatta
味あじわうに違ちがいなかった
politeに違ちがいありませんnichigaiarimasen
味あじわうに違ちがいありません

Notes

Nouns and na-adjectives join bare (独身どくしんに違ちがいない). No の／な needed, unlike
はずだ／わけだ.