The website for quantitative analysis of derivational morphemes
Omnia mutantur, nihil interit..     (Ovid, Metamorphoses)
MorphoQuantics – type and token frequencies of word-initial and word-final affixes in Spoken English
This website gives you access to a database of 17,943 complex word types and their token frequencies from the Spoken component of the BNC. The database of 1,008,280 tokens had been derived from 835 derivational morphemes (prefixes, suffixes and combining forms). For example, if you need to know the number of different types of adjectives that end in –ful, such as helpful, compared with the number of nouns that end in –ful, such as handful, MorphoQuantics will give you the following summary from the Spoken component of the BNC:
AffixPart of SpeechNo. TypesNo Tokens

How to access the data from MorphoQuantics:
You need to register to access MorphoQuantics. The use of its data is FREE of charge for academic and research purposes, and you are required to reference it as shown under How to cite MorphoQuantics. It may not be used commercially without written permission.

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MorphoQuantics will also give you:
  • The etymology of the derivational morpheme and its meaning, if you have access to the OED (online).
  • All the complex words containing that affix and their token frequencies from the Demographically Sampled and Context Governed components of the BNC.

More information on MorphoQuantics:
The 835 prefixes, suffixes and combining forms listed in MorphoQuantics, together with their function and meaning, were primarily derived from: Stein, G. (2007) A Dictionary of English Affixes: Their function and meaning. LINCOM Studies in English Linguistics, LINCOM EUROPA academic publications.

How to cite MorphoQuantics:
If you use the data from MorphoQuantics, please reference this website AND the following paper using this format:

Laws, J.V. & C. Ryder (2014) MorphoQuantics:
Laws, J.V. & C. Ryder (2014) Getting the measure of derivational morphology in adult speech: A corpus analysis using MorphoQuantics. Language Studies Working Papers: University of Reading, Volume 6, pp. 3-17.

MorphoQuantics was developed by Dr Jacqueline Laws and Dr Chris Ryder. For further information, please contact:
University of Reading

Information from the Oxford English Dictionary remains the copyright of Oxford University Press and is reproduced on this website by permission of Oxford University Press.

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