ただちに
tadachiniWithout delay; right away; immediately.
事故が発生したらただちに警察に通報してください。
If an accident occurs, please report it to the police immediately.
彼はただちにその場を立ち去った。
He left the scene immediately.
Often used in formal contexts such as instructions, announcements, or legal documents. Can also imply a sense of urgency or importance.
💡Pro Tip
Formal vs. Informal Alternatives
In casual conversation, 'すぐに' (sugu ni) is more commonly used. 'ただちに' is better suited for formal writing, instructions, or situations where urgency is emphasized.
⚡Gold Rule
When to Use 'ただちに'
Use 'ただちに' when the context requires a strong sense of urgency or formality, such as in laws, regulations, instructions, or serious announcements. Avoid using it in casual or relaxed settings.
📖Word Origin
The word 'ただちに' is composed of 'ただ' (meaning 'just' or 'simply') and the adverbial particle 'に'. Historically, 'ただ' evolved from Old Japanese 'ただ' (meaning 'only' or 'merely'), which in turn comes from the Proto-Japonic root *tata. The adverbial particle 'に' adds a sense of manner or time.
📝Usage Notes
'ただちに' is more formal than 'すぐに' and is often used in official, legal, or urgent contexts. It implies a stronger sense of immediacy and necessity compared to 'すぐに'. While 'すぐに' can mean 'soon' or 'right away,' 'ただちに' suggests an action that must be taken without any delay.