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A 'lisp' (O E ''wlisp'', stammering)''Concise English Dictionary'' Wordsworth Editions Ltd. 1994, ISBN 1-85326-328-1 is a speech impediment, historically also known as 'sigmatism'.^[1] Stereotypically, people with a lisp are unable to pronounce sibilants (like the sound ), and replace them with interdentals (like the sound ), though there are actually several kinds of lisp.

★ "Interdental" lisping is produced when the tip of the tongue protrudes between the front teeth and "dentalised" lisping is produced when the tip of the tongue just touches the front teeth.

★ The "lateral" lisp, where the and sounds are produced with air escaping over the sides of the tongue, is also called 'slushy ess' or a 'slushy lisp' due to the wet, spitty sound. The symbols for these lateralized sounds are in the Extended International Phonetic Alphabet for speech disorders, and .

★ Finally there is the "palatal lisp" where the speaker attempts to make the sounds with the tongue in contact with the palate.

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References

See also

★ Speech sound disorder

★ Gay lisp

★ Stuttering

★ Lisp programming language

References

1. Lisping - when /s/ and /z/ are hard to say