Prepositions after adjectives

Unfavourable to or unfavourable for?

Use unfavourable to for attitudes or reactions. Use unfavourable for when describing conditions that negatively affect something.

Quick answer

Which preposition follows unfavourable?

Use unfavourable to when someone opposes or dislikes something. Use unfavourable for when conditions are bad for a person, activity, or result.

The committee is unfavourable to the proposal.
Weather conditions are unfavourable for flying.

Choose the pattern by meaning

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

1
unfavourable to + idea/person

Showing opposition or lack of support

To introduces the thing someone reacts negatively toward.

Investors were unfavourable to the plan.
Public opinion became unfavourable to the policy.
2
unfavourable for + activity/result

Describing bad conditions

For introduces the activity or outcome affected negatively.

The climate is unfavourable for farming.
These terms are unfavourable for small exporters.

See the difference in context

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

Construction
Example
Meaning
unfavourable to
She is unfavourable to the suggestion.
opposed to or not supportive of something
unfavourable for
The market is unfavourable for new businesses.
creating difficult conditions
unfavourable towards
They are unfavourable towards the merger.
alternative form expressing attitude

Common mistakes

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

Using to for conditions

Use for when talking about conditions affecting an activity or result.

✕ The weather is unfavourable to farming. ✓ The weather is unfavourable for farming.

Using for with opinions

Use to when expressing support or opposition.

✕ The board is unfavourable for the proposal. ✓ The board is unfavourable to the proposal.

Quick practice

Choose the expression that matches the intended meaning.

1. The director is unfavourable ___ the idea.
2. Current conditions are unfavourable ___ investment.
3. Public opinion became unfavourable ___ the reform.

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Frequently asked questions

When should I use unfavourable to?

Use it for opinions, attitudes, or reactions toward something.

When should I use unfavourable for?

Use it for conditions that negatively affect an activity, person, or result.

Can I use unfavourable towards?

Yes. It is an alternative form for attitudes, especially in British English.

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