theyll

Theyll is not a standard English word. In most contexts, it appears as a misspelling or typographic error for the contraction they’ll, which stands for they will. The contraction expresses a future action by the subject “they” and is used in both spoken and written English, particularly in informal contexts. It is not used as a proper noun or technical term.

Correct spelling and form: The proper contraction is they’ll, with an apostrophe that marks the omission of the letters “wi” from “will.” Other related contractions with they include they’re (they are) and they'd (they would or they had). Contractions are common in informal writing and speech, while formal writing typically favors the full forms “they will” or “they are.”

Usage: They’ll can appear in many tenses when combined with other auxiliary verbs, for example: They’ll arrive soon. They’ll have finished by tomorrow. In negation, the standard contracted form is they won’t (will not). The form they’ll not is archaic or nonstandard in modern usage.

Etymology and notes: The contraction arose from the broader pattern of English pronouns paired with auxiliary verbs being shortened in informal speech and writing. The apostrophe indicates the omitted letters. The term “theyll” without punctuation is generally considered an error and should be corrected to they’ll in standard writing.

See also: will contractions, they’re, they’d, English grammar, contractions.