English UsageComparison guide

Set Someone Doing vs. Set Someone To Do

Both set + object + -ing and set + object + to-infinitive can occur, but they express different relationships: causing an activity/state to begin versus assigning someone a task.

Reviewed2026-09-28Evidence1 sourceSectionEnglish Usage

Quick answer

Use “set someone doing” when you cause the activity to start; use “set someone to do” when you assign the person a task.

Key details

Confusion Familygrammar-and-usage distinction

Rule Familyverb-complement and object pattern

TermsSet Someone Doing, Set Someone To Do

Choose the right form

Decision table for Set Someone Doing vs. Set Someone To Do
Meaning / situation	Form / construction	Decision
cause an activity or reaction to begin	set + person + -ing	Use the -ing pattern when the person starts the resulting activity.
assign a person a task	set + person + to-infinitive	Use the to-infinitive when giving the person something to do.
choose based only on verb form	not enough	Decide whether the meaning is caused activity or assigned task.

Quick tests

Meaning / construction test

Are you assigning the person a task to perform?

If yes: Use “set someone to do.”

If no: If something causes the person to start an activity or reaction, use “set someone doing.”

Caveat: The contrast is driven by meaning: assignment/purpose versus causing an activity to begin.

Examples

Example

The joke set everyone laughing.

The joke causes the activity/reaction to begin.

Example

She set the assistants to check the figures.

The assistants are assigned a task.

Example

The music set the children dancing.

The -ing construction presents the resulting activity.

Further guidance

Boundary

The constructions are not stylistic variants; context determines whether set means cause/start or appoint/assign.

Construction

Oxford documents set with object + -ing and with object + to-infinitive in distinct senses.

Decision

Choose doing for initiated activity and to do for an assigned action or task.

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

set — Oxford Advanced Learner’s Dictionary (opens in a new tab)Oxford Learner’s Dictionaries · Set + object + -ing for causing activity/motion and set + object + to-infinitive for assigning an action

Related guides

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Argue Someone Into Doing vs. Argue Someone To Do

Oxford directly documents “argue somebody into doing something” for persuading somebody by giving reasons. The cited construction evidence directly supports into + -ing; it does not license “argue someone to do” as an equivalent complement pattern.

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Ask Someone To Do vs. Ask Doing

When ask means request an action from a person, Cambridge documents ask + person + to-infinitive. Bare “ask doing” is not the ordinary request complement for that meaning.

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Badger Someone Into Doing vs. Badger Someone To Do

Cambridge directly documents both badger + object + into + -ing and badger + object + to-infinitive for repeated pressure or requests that push someone toward an action. The verb also covers repeated questioning, so context must show whether the sentence is about persistent persuasion or interrogation rather than assuming every use names a requested action.

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Bamboozle Someone Into Doing vs. Bamboozle Someone To Do

Cambridge directly illustrates bamboozle + object + into + -ing for deceiving someone so that the person takes an action. The cited entry does not establish bamboozle + object + to-infinitive as an equally documented alternative, so this guide does not manufacture a two-way rule.

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Beg Someone To Do vs. Beg Doing

Cambridge explicitly documents beg + object + to-infinitive for an urgent request and also records beg for + noun and other request patterns. A following -ing form may appear elsewhere in a sentence, but it is not the ordinary replacement for the documented object + to-infinitive request construction.

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Beguile Someone Into Doing vs. Beguile Someone To Do

Cambridge gives direct evidence for beguile someone into doing something in the literary persuade/attract/deceive sense. The cited entry supports the into + -ing construction; it does not establish beguile + object + to-infinitive as an equivalent pattern for this meaning.

Explore the topic

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