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Prepositions after verbs

Dictate by or dictate to?

Dictate to is the normal pattern when speaking words for someone to write. By appears mainly in passive expressions such as dictated by circumstances.

Quick answer

Standard usage

Use dictate to when giving spoken words to a listener or typist. Use dictated by in passive constructions to show the force or authority controlling something.

She dictated the letter to her assistant.
The decision was dictated by budget limits.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
dictate to + person

Speaking for someone to write

This is the standard meaning of dictate.

The manager dictated notes to the secretary.
2
dictated by + cause

Showing control or influence

Passive forms with by show what determines an action.

Their strategy was dictated by market conditions.
3
dictate that + clause

Giving orders or requirements

Dictate can also introduce a clause with rules or demands.

Company policy dictates that staff wear badges.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
dictate to
He dictated the report to his assistant.
speak words for another person to write
dictated by
The timetable was dictated by weather conditions.
controlled or determined by something
dictate by
They communicated by dictating messages.
by can introduce manner separately, but dictate by is not a fixed pattern

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using dictate by for the listener

Use to before the person receiving the words.

✕ She dictated by her assistant. ✓ She dictated to her assistant.

Confusing active and passive patterns

By is common in passive structures.

✕ The manager dictated by strict rules. ✓ The manager was dictated by strict rules.

Quick practice

Choose the expression that matches the intended meaning.

1. The lawyer dictated the statement ___ her clerk.
2. Their response was dictated ___ company policy.
3. The manual dictates ___ all visitors must register.

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Frequently asked questions

Is dictate by ever correct?

Not as the normal verb pattern. By is mainly used in passive expressions such as dictated by circumstances.

Can dictate mean control?

Yes. It can mean determine or strongly influence decisions or behaviour.

Do I need to after dictate?

Yes, when naming the person who receives the spoken words.

dabble, in, dabble, with "damage to" or "damage by"? dance to, with, on, in or for? "dangle from" or "dangle in"? dare to, for, on, as or at? dash to, into, out, from or on? daydream about, for, in, of or on? "debate in", "debate on" or "debate with"? deceive by, in, into, on or about? "decide on", "decide to" or "decide by"? declare in, by, on, to or as? decline in, by, from, to or for?

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