〜たりとも

〜たりとも is a set expression meaning not even (a single). This is a fixed pattern or phrase commonly used in Japanese conversation and writing. Understanding set expressions helps you sound more natural and idiomatic.

This is a highly advanced pattern found mainly in literary works, formal speeches, legal documents, and academic writing. It is rarely used in casual conversation.

When to Use#

• When emphasizing that not even the smallest amount is acceptable
• When expressing zero tolerance for something

When NOT to Use#

• In casual conversation — this sounds literary or stiff; use a simpler expression

Example Sentences#

• 命を救う時、一瞬たりとも躊躇は許されません。 — Not even a moment of hesitation can be allowed when saving a life.
• 上下関係では、一つたりとも失敗は許されません。 — In status-based relationships, not even a single mistake is permitted.
• 交渉の場では、一瞬たりとも油断は許されません。 — In negotiations, one cannot afford even a moment's carelessness.

Practice#

Try reading these sentences aloud, then check the translation and vocabulary:

Common Mistakes#

1. Using 〜たりとも in casual conversation — This pattern sounds overly formal or literary in casual speech. Reserve it for formal writing, presentations, or situations that call for elevated language.
2. Direct translation from English — The concept expressed by 〜たりとも may not map one-to-one with its English translation. Focus on understanding the Japanese usage through example sentences rather than relying on the English gloss.

Related Patterns#

• 〜ばかり (only / nothing but) — Next step