What does thereafter mean?
Thereafter is a formal adverb meaning from a particular point in time onward or at a later stage. Its wording usually points backward to a preceding event: “The policy took effect in 2020 and thereafter applied to all branches.” This makes it especially useful in historical accounts, legal documents, reports, and other contexts in which the relationship between two moments or stages of a process matters. Although its basic temporal meaning is straightforward, thereafter can carry a slightly elevated or literary tone. It may also mean “subsequently” when describing what happened at a later point, as in “Thereafter, negotiations became increasingly difficult.” The word is not interchangeable with thereby, which describes a means or consequence, or with hereafter, which usually begins from the present or the point of speaking. Thereafter is therefore best understood as a precise marker of time: it identifies the point before which something applies and the period or sequence that follows.
adverbThereafter means from a particular point in time onward. It can also mean at a later time or subsequently, especially when referring to a sequence of events.
- From a particular time in the past onward.
- At a later time or subsequently.
"The agreement was signed in June and thereafter governed all subsequent negotiations."
"The museum reopened in 2010 and thereafter welcomed record numbers of visitors."
"He was initially reluctant, but thereafter became one of the project's most dependable supporters."
Thereafter turns a single phrase into a timeline: everything that matters is what follows the reference point.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does thereafter come from?
Thereafter is a Middle English compound formed from there and after. The elements trace back to Old English þær, meaning “there,” and æfter, meaning “after.” The form has continued in use with its modern temporal sense, while parallel compounds include hereafter and the related locative formations therein and thereupon.
How thereafter is actually used
Thereafter is formal and literary, and it is especially common in legal, historical, and institutional writing. It often implies a continuing period or a sequence of events after a clearly marked point.
Easily confused with thereafter
Hereafter usually means from the present or the point of speaking onward, whereas thereafter refers from a specified time in the past onward.
Thereby means as a result or by that means, whereas thereafter refers to a point in time.