How to use "thereafter"

What Does "thereafter" Mean?

• Grammatical function: "Thereafter" is a conjunctive adverb that expresses a temporal sequence. It functions as a formal synonym for "after that time" or "subsequently," establishing a chronological relationship where one event follows another.
• Typical sentence position: It is highly versatile and can appear in the initial, medial, or final position of a clause.
• Register: This term is decidedly formal. It is frequently found in legal documents, academic writing, journalism, and technical reports, but it is rarely used in casual spoken English.

How to Use It

• Syntactic patterns: It often follows a specific time reference or a completed action. It can be used as a standalone adverbial phrase or as part of a prepositional structure (e.g., "shortly thereafter").
• Punctuation rules: When starting a sentence, it is usually followed by a comma. In the middle of a sentence, it may be set off by commas if used parenthetically, though it often appears without them when modifying a verb directly.
• Grammatical flexibility: It is flexible in its placement but cannot be negated directly (one would say "not thereafter" rather than "thereafter not"). It is often preceded by temporal modifiers like "shortly," "immediately," or "soon."
• What sounds unnatural: Using "thereafter" in a low-register setting (e.g., "I went to the mall and thereafter I had a burger") sounds overly stiff and archaic.

Real-World Examples

These examples are sourced from thereafter on Ludwig.guru.

"But the greater significance of that day in Dallas – beyond the arguments about the grassy knoll and the Zapruder film – is the effect the killing had on how the Kennedy presidency would be viewed thereafter." — theguardian.com

"Thereafter the demonisation of independent journalism gathered pace." — theguardian.com

"At the age of 59, he turned to consulting and shortly thereafter found a home in Pakistan." — theguardian.com

"He finished third, below expectations, and dropped out shortly thereafter, much to the dismay of many in the national GOP who saw him as the most credible alternative to eventual 2012 candidate Mitt Romney." — theguardian.com

"Roma had scored first on Sunday, Kevin Strootman side-footing home from close range in the 28th minute, but thereafter Cerci waged a one-man war against the visitors' defence – the footballing equivalent of the soldier forgotten behind enemy lines in a 1980s war movie." — theguardian.com

Examples sourced from https://ludwig.guru/s/thereafter

Similar Phrases and Alternatives

Phrase	Context
afterward	Neutral register; the standard choice for general sequencing in North American English.
subsequently	Formal; implies a logical or chronological progression in professional writing.
after that	Informal/Neutral; the most common choice for spoken English and casual storytelling.
later	Simple and direct; used when the specific gap in time is less important than the sequence.
henceforth	Highly formal/Legal; refers to all time from this point forward (unlike the past-oriented thereafter).
from then on	Idiomatic; emphasizes a continuous state or habit that began at a specific past moment.

Common Mistakes

• Inappropriate Register: Using "thereafter" in text messages or casual emails can make the writer seem pretentious or disconnected.
• Confusion with hereafter: Learners often confuse thereafter (which refers to a time following a past event) with hereafter, which refers to the future starting from the present moment.
• Redundancy: Adding redundant time markers like "then thereafter" is unnecessary since thereafter already encompasses the meaning of "then."

Quick-Reference Summary

Expression	Function	Register	Typical Position
thereafter	Temporal sequence	Formal	Initial, Medial, or Final

FAQs

Where can thereafter be placed within a sentence?

The word thereafter is highly flexible and can appear in sentence-initial, mid-clause, or sentence-final positions. While it often begins a sentence to establish a new timeline, it is equally common at the very end of a clause to provide a temporal anchor for the preceding action.

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How does thereafter differ from afterward?

While both terms describe sequence, thereafter is significantly more formal and is typically used in legal or historical contexts. In contrast, afterward is the standard neutral choice for everyday communication and general narrative writing.

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When should I avoid using thereafter?

Learners often use it in casual conversation where "after that" would be more natural, or they confuse it with hereafter which refers to the future from the present moment. To ensure clarity, use thereafter only when referring back to a specific point in the past within a formal document.