Expressing purpose or intention in formal contexts

To explicitly state the goal of an action with formality and precision

Writing reports, instruction manuals, academic papers, legal documents

Professional communication, technical writing, legal texts, formal policy statements

so as to

so as to

an infinitive verb (e.g., to optimize, to avoid, to ensure)

• so as to ensure
• so as not to offend
• so as to avoid confusion
• so as to minimize
• so as to comply

• in order to (slightly more common)
• to + infinitive (less formal)
• so that + clause (requires subject and verb)

Using a full clause after 'so as to' (e.g., *so as to we can* — incorrect); using 'so as to' with a noun instead of an infinitive

in order to, with a view to, for the purpose of, so that

Learners may use 'to' alone (e.g., 'We met to discuss') instead of 'so as to', losing the formal tone; or incorrectly follow it with a subject + verb clause.

• formal purpose frames

More formal and slightly more precise than 'in order to'; often used in written instructions or policy language to emphasize intentionality.

Conveys authority, clarity, and deliberateness in formal communication by explicitly linking action to intent.

purpose infinitive

This phrase is often used in formal writing to clearly state the purpose of an action. It is more concise than alternatives like 'in order to' or 'so that' and is commonly found in technical, academic, or legal contexts.

We must act so as to minimise the impact.