A general-purpose English sentiment lexicon called WKWSCI Sentiment Lexicon v1.1 (named after the authors’ school Wee Kim Wee School of Communication & Information) is available for download.

The lexicon is based on the 12dicts common American English word lists compiled by Alan Beale from twelve source dictionaries. The lexicon contains 29,729 words tagged with 4 parts-of-speech: adjective, adverb, noun, and verb. The lexicon comprises 3,187 positive words, 7,247 negative words and 19,295 neutral words.

WKWSCI Sentiment Lexicon v1.0 was described and compared with five existing lexicons in the paper “Lexicon-Based Sentiment Analysis: Comparative Evaluation of Six Sentiment Lexicons“. Version 1.1 includes some improvements resulting from the reported study.