# Adverbs of Probability

Adverbs of probability indicate how certain we are about an action. In this lesson, we will learn about how and when to use them.

## What Are Adverbs of Probability?

**Adverbs of probability** are a type of adverb used to indicate the *likelihood or probability* of an event or situation occurring. They provide information about the speaker's or writer's **degree of certainty or uncertainty** about what is being discussed.

## Common Adverbs of Probability

There are thousands of adverbs of probability in English. However, below is a list of some of the most common ones. Let us take a look:

**Probably****Likely****Unlikely****Surely****Undoubtedly****Possibly****Maybe**

## Structure

Some adverbs of probability __end__ in '-ly'. Take a look at the examples below:

I'd __ly__

She will __ly__

However, there are several adverbs of probability that do __not__ have an '-ly' at the end. Study the following examples:

He will do as he's told,

## Placement

Adverbs of probability are usually placed __before__ the main verb. Look at the following examples:

She should __visit__ a therapist.

They __had__ glasses yesterday.

## How Do We Use Them in Sentences?

In the table below, you can see adverbs of probability ranging from the __least__ __likely__ to happen to the __most__ __likely__ to happen:

The Most Likely |
Certainly |
---|---|

Definitely | |

Obviously | |

Likely | |

Probably | |

Possibly | |

Perhaps | |

The Least Likely |
Maybe |

Now, let us see some examples:

I should

Here, there is little chance for the idea to be true.