1 [count] : the usual attitude or mood of a person or animal

• He always had a cheerful/nervous disposition. [=temperament, personality]
• It’s nice to work with someone who has such a sunny disposition. [=who is usually cheerful]
• a dog with an excellent disposition

2 formal

a [singular] : a tendency to act or think in a particular way

• Her disposition was to always think negatively.
• He has a disposition toward criminal behavior.

b [count] : a tendency to develop a disease, condition, etc.

• people with a genetic disposition toward a particular disease

3 formal : the act or power of officially or legally giving land, possessions, etc., to someone

[count]

• the philanthropist’s charitable dispositions [=(less formally) donations]

[noncount]

• A will is a legal document that is used in the disposition of property.

4 [count] formal : the way things are placed or arranged — usually singular — often + of

• The map showed the disposition of troops on the border.