てっきり

• 読み: てっきり
• ローマ字: tekkiri
• 発音: /tek.ki.ɾi/

意味

Surely; certainly; without a doubt. Expresses a firm belief that turns out to be wrong.

An adverb expressing a strong assumption or conviction, almost always used when that assumption proves incorrect. The typical pattern is てっきり…と思っていた (I was sure that…). Implies the speaker was completely convinced of something that turned out not to be true — てっきり来ると思っていた (I was sure you would come). Essential for expressing mistaken certainty in conversation.

例文

1. てっきり彼が来ると思っていたのに来なかった。
2. てっきり日本人だと思ったらアメリカ人だった。
3. てっきり冗談だと思っていたら本当だった。

使い方ガイド

場面: daily life, conversation, storytelling

トーン: surprised

起源と歴史

A native Japanese adverb, likely derived from an emphatic or intensifying expression. The double consonant っ adds force to the conviction, mirroring how certainty is felt strongly in the moment before being overturned.

文化的背景

時代: Edo period

世代: All ages

社会的背景: Universal