The SUBTL Word Frequency
Based on spoken-like language
Based on 50 million words
Search online in SUBTL database
Brysbaert, M. & New, B. (2009)
Moving beyond Kucera and Francis: A Critical Evaluation of Current Word Frequency Norms and the Introduction of a New and Improved Word Frequency Measure for American English.
Behavior Research Methods, 41 (4), 977-990.