English Dictionary

informal

/ɪnˈfɔɹm(ə)l/

adj

Not formal or ceremonious. / Not in accord with the usual regulations. / Suited for everyday use. / (of language) Reflecting everyday, non-ceremonious usage.

He wore an informal outfit to the party.

意味（1）

Not formal or ceremonious.

One saint's day in mid-term a certain newly appointed suffragan-bishop came to the school chapel, and there preached on “The Inner Life.” He at once secured attention by his informal method, and when presently the coughing of Jarvis […] interrupted the sermon, he altogether captivated his audience with a remark about cough lozenges being cheap and easily procurable.

意味（2）

Not in accord with the usual regulations.

an informal agreement

意味（3）

Suited for everyday use.

informal clothes

意味（4）

(of language) Reflecting everyday, non-ceremonious usage.

意味（5）

(horticulture) Not organized; not structured or planned.