
1) Excessive use of letter I 2) Vowel shift
Found on
https://www.crosswordclues.com/clue/iotacism

Iotacism (ἰωτακισμός, iotakismos) is the process by which a number of vowels and diphthongs in Ancient Greek converged in pronunciation so that they all sound like iota (i) in Modern Greek. In the case of the letter eta specifically, this process is known as itacism (from the resulting pronunciation of the letter`s name as ˈita). ==Vo....
Found on
http://en.wikipedia.org/wiki/Iotacism

excessive use of the letter 'i'
Found on
http://phrontistery.info/i.html

• (n.) The frequent use of the sound of iota (that of English e in be), as among the modern Greeks; also, confusion from sounding /, /, /, /, //, etc., like /.
Found on
http://thinkexist.com/dictionary/meaning/iotacism/

A speech defect marked by the frequent substitution of a long e sound (that of the Greek iota) for other vowels. ... Origin: G. Iota, the letter &iota. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973
I·o'ta·cism (i*ō'tȧ*sĭz'm)
noun [ Greek
'iotakismo`s a laying too much stress upon the iota (ι): confer French
iotacisme . See
Iota .] The frequent use of the sound of iota (that of English
e in
be ), as among the modern Greeks; also,...
Found on
http://www.encyclo.co.uk/webster/I/95

Type: Term Pronunciation: ī-ō′tă-sizm Definitions: 1. A speech defect marked by the frequent substitution of a long e sound (that of the Greek iota) for other vowels.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=45616

iotacism The tendency in speakers of modern Greek to use the sound of iota in place of the sound of other vowel characters; such as, eta or upsilon.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1085/

the conversion of other vowel sounds, esp. in Modern Greek, into (ē), the sound of iota.
Found on
https://www.infoplease.com/dictionary/iotacism
No exact match found.