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Prepositions after verbs

tread on vs tread upon

Both tread on and tread upon are grammatical. Tread on is the usual modern form, while tread upon is more formal or literary.

Quick answer

Which form is more common in everyday English?

Use tread on for ordinary speech and writing. Tread upon has the same meaning but sounds more formal, old-fashioned, or literary.

Please don't tread on the flowers.
He felt she had trodden upon his rights.

Choose the pattern by meaning

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

1
tread on + surface/object

Stepping onto something

Use tread on for physically stepping onto a surface or object.

Watch where you tread on the icy path.
2
tread upon + abstract noun

Formal or figurative use

Tread upon is common in formal or figurative language about rights, feelings, or traditions.

No one should tread upon basic freedoms.
3
tread on + feelings/rights

Causing offence or harm

Tread on can also be used figuratively in modern English.

I didn't mean to tread on your feelings.

See the difference in context

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

Construction
Example
Meaning
tread on
She accidentally trod on my foot.
Standard modern form for physical or figurative meaning.
tread upon
The speech warned against treading upon tradition.
More formal or literary version of tread on.
step on
He stepped on the cable.
More common everyday alternative for physical actions.

Common mistakes

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

Using tread upon in very casual contexts

Tread upon is grammatical but may sound overly formal in conversation.

✕ Don't tread upon my shoe. ✓ Don't tread on my shoe.

Forgetting the object

Tread on and tread upon normally take an object.

✕ She trod on accidentally. ✓ She trod on the paper accidentally.

Quick practice

Choose the expression that matches the intended meaning.

1. Please don't ___ the wet paint.
2. The novel describes rulers who ___ the people's rights.
3. Which option sounds more formal?

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Frequently asked questions

Is tread upon old-fashioned?

It is still correct but often sounds formal or literary in modern English.

Can tread on be figurative?

Yes. You can tread on someone's feelings or rights.

What is the past tense of tread?

Both trod and treaded exist, but trod is more traditional.

tackle by, in, for, with or on? tack-on-onto-to-across, as "tag with" or "tag in"? tailor to, for, from, toward or towards? "taint by" or "taint with"? "take into", "take in" or "take to"? "talk about" or "talk to"? tally with, in, for, up or at? "tap into" or "tap on"? target at, by, for, to or in? tarnish by, in, with, after or as? "taste like", "taste of" or "taste in"?

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