9.1b When original pronunciation is lost.

Do not use these contractions in words where the sound of the original word is no longer present. For example:

Do not use ever in evert, severe, or fever.

Do not use here in heresy.

Do not use time in centime or centimeter.

Do not use under in launder or flounder.

Do not use there in ethereal.

Do not use word in sword.

Do not use these in theses.

Do not use some in chromosome or gasometer.

Do not use had in hadji.