adv ·Common ·High school level

Definitions

Adverb

1. 1
   Of this, that, or it. not-comparable

   "lack thereof"

2. 2
   From that circumstance or origin; therefrom, thence. not-comparable

Adverb

1. 1
   from that circumstance or source wordnet
2. 2
   of or concerning this or that wordnet

Synonyms

All synonyms

awayforthhenceoffoutthence

Example

More examples

"Whereof one cannot speak, thereof one must be silent."

Etymology

From Middle English thereof, therof, ther-of, ther of, from Old English þǣrof; equivalent to there + of. Compare Swedish därav.

Related phrases

sufficient unto the day is the evil thereof

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.