thereat

[thair-at]

adverb

1. at that place or time; there.

   Seeing the gate, they entered thereat.

2. because of that; thereupon.

thereat

/ ˌðɛərˈæt /

adverb

1. at that point or time

2. for that reason

Word History and Origins

Origin of thereat¹

before 900; Middle English ther at, Old English thǣr æt. See there, at ¹

When To Use

What does thereat mean?

Thereat means at the place or time that was just mentioned, as in After the completion of the new auditorium, all meetings will be held thereat (translation: After the completion of the new auditorium, all meetings will be held there).

Thereat is formal and is often used in legal language.

Thereat can also mean because of the thing just mentioned or for that reason, as in I can no longer effectively fulfil my duties, and thereat I resign. A synonym for this sense of the word is thereupon.

Example: They calculated the exact time of the eclipse and decided to meet thereat.