# probably

/ˈpɹɑbəˌbɫi/ (US) · /pɹˈɒbəbli/ (UK) · CEFR A1 · Adverb

Source: https://englishreference.com/word/probably
Updated: 2026-05-02

## Definition

used to say that something is very likely to happen or be true. You use it when you are almost certain but not one hundred percent sure.

For teachers: used to indicate a high degree of likelihood or probability. Functions as a modal adverb to qualify the certainty of a statement.

## Examples

- I will probably stay home tonight.
- If the weather stays this clear, we will probably reach the mountain summit by noon.
- The researchers concluded that the unusual data points were probably caused by a minor calibration error in the sensor rather than a new physical phenomenon.

## Pitfalls

- Not "Probably I will go." but "I will probably go." — In neutral English, this adverb usually sits in the mid-position (before the verb) rather than at the start of the sentence.

## Usage notes

- Typically placed before the main verb but after the first auxiliary verb or the verb 'to be'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.