English Reference
adverb

mutually

adv.
US /ˈmjutʃuəɫi/ UK /mjˈuːtʃuːəli/ mu·tu·al·ly

  1. 01 B2 Upper Intermediate

    in a way that involves two people or groups doing the same thing for each other.

    in a reciprocal manner; used when two or more parties perform the same action toward one another.

    Simple

    The two companies decided to work together because they could mutually benefit from the deal.

    In context

    The treaty was designed so that both nations would mutually support each other in the event of a regional conflict.

    Usage

    Often used with verbs like 'benefit', 'support', or 'respect'.

    Teacher's tip

    Learners often confuse this with 'together'. While 'together' means doing something as a group, 'mutually' emphasizes that the action goes back and forth between the members.

    reciprocallyinteractively
  2. 02 B2 Upper Intermediate

    shared by two or more people, or agreed on by everyone involved.

    held in common or experienced by two or more parties; frequently modifies adjectives like 'exclusive', 'beneficial', or 'agreeable'.

    Simple

    They reached a mutually convenient time for the meeting after checking their calendars.

    In context

    The two theories are mutually exclusive, meaning that if the first one is true, the second one must be false.

    Usage

    Commonly appears in the fixed phrase 'mutually exclusive'.

    Teacher's tip

    In business and law, 'mutually' is used to show that an agreement is not forced by one side but accepted by both.

Usage mutually reinforcing · mutually beneficial · mutually reinforce

Meanwhile, in 2023, a joint statement from Archewell Productions and Spotify said they had "mutually agreed to part ways" .

BBC News· 22 Aug 2026

In 2023, however, Spotify and the couple's Archewell Audio announced that they had "mutually agreed to part ways".

BBC News· 21 Aug 2026

From mutual + -ly.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated