in formalとは 意味・読み方・使い方

発音

• (General American) IPA: /ɪnˈfɔɹm(ə)l/
• (Received Pronunciation) IPA: /ɪnˈfɔːm(ə)l/
• ハイフネーション: in‧for‧mal
• 韻: -ɔː(ɹ)məl

形容詞

informal (comparative more informal, superlative most informal)

1. Not formal or ceremonious.

   an informal get-together

   • 1918, W[illiam] B[abington] Maxwell, chapter III, in The Mirror and the Lamp, Indianapolis, Ind.: The Bobbs-Merrill Company, →OCLC:

     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.

   • 2019, Li Huang, James Lambert, “Another Arrow for the Quiver: A New Methodology for Multilingual Researchers”, in Journal of Multilingual and Multicultural Development, →DOI, page 4:

     Students and faculty members lunch at the cafeteria and naturally communicate freely with one another in a relaxed and informal setting.

   • 2025 August 20, Ashlyn Barry, Justin A. Haegele, Daniel Schaefer, Kristen A. Pickett, Luis Columna, “Autistic Young Adults’ Experiences and Recommendations for Strength Training”, in Journal of Autism and Developmental Disorders‎, →DOI:

     Participants emphasized the importance of their social network in facilitating their strength training experiences. Family members served as informal coaches who introduced the participants to basic exercises. This role, where family members model healthy behaviors, has been identified as being important to help supporting PA participation among autistic individuals in prior work (Ku et al., 2020; Shields et al., 2012).

2. Not in accord with the usual regulations.

   an informal agreement

3. Suited for everyday use.

   informal clothes

4. (of language) Reflecting everyday, non-ceremonious usage.
   • 2025 August 14, Saranka Maheswaran, “Cheer up, Ice Cube, your War of the Worlds movie may be really bad, but it’s not worthless”, in The Guardian‎:

     When I returned to the movie Ghilli, a Kollywood classic (Kollywood being the informal name for Tamil cinema) that I loved as a kid, I couldn’t help but question why the story continues romantically, without question, after the heroine is slapped by the supposed love of her life.

5. (horticulture) Not organized; not structured or planned.

同意語

• (not formal or ceremonious): casual
• (not in accord with the usual regulations): unofficial
• (suited for everyday use): casual
• (language: reflecting everyday, non-ceremonious usage): colloquial

反意語

• formal

派生語

アナグラム

• formalin