TOEIC vocabulary sources
Source
TOEIC Service List (TSL) 1.2 by Charles Browne and Brent Culligan.
A research-based list of workplace and business English vocabulary, designed to supplement general English vocabulary for TOEIC study. It is not a complete TOEIC vocabulary or an official ETS word list or endorsement.
License
The original list and our adapted selection are available under CC BY-SA 4.0 (Creative Commons Attribution-ShareAlike 4.0 International). When sharing or adapting the list, credit the authors, link to the license, note your changes, and share adaptations under the same license.
Changes made by Inoh
We selected 1,250 of 1,250 source entries.
- Mapped e-book → ebook, entrée → entree, bacteria → bacterium, and salespeople → salesperson. Used outdated and unauthorized for the source headwords outdate and unauthorize.
- Used bylaw, headquarters, housekeeping, and sightseeing for the source headwords by-law, headquarter, housekeep, and sightsee.
- Corrected two source definitions: quarterly means every three months; outdated means no longer useful or relevant.
- Matched words to their intended dictionary meanings and added missing meanings. Definitions and examples are reviewed separately from the source list.
Download the word list (JSON), including original headwords and documented forms.
Adapted by Inoh · September 27, 2026