だいき on Twitter
'今年9月に新しく、性自認がノンバイナリーの人（単数）を表す用法が追加された"they"が、
英語辞典で有名なメリアムウェブスターの「今年の言葉」に選ばれたとのこと（性別が明らかでない場合などの単数用法はすでに掲載済み）。
学術系でも、APAのスタイルガイドとかは単数theyの用法が載ってたりする。' https://twitter.com/daiki_soc/status/1204454694271119360
Merriam-Webster on Twitter
'The word ‘they’
- was looked up 313% more this year than last.
- had a new sense added in September.
- is increasingly common in both public and personal communication.
https://www.merriam-webster.com/dictionary/they
>used with a singular indefinite pronoun antecedent
>…
>used with a singular antecedent to refer to an unknown or unspecified person
>…
>used to refer to a single person whose gender is intentionally not revealed
>…
>used to refer to a single person whose gender identity is nonbinary (see nonbinary sense c)
