Reasons for Replaceable <e>
< cake >
The <e> in <cake> is needed because it marks the <a> long (or tense).
dolphin
The <ph> in <dolphin> is a sign of Greek.
< going >
go + ing
This homophone for <for> is a number.
< four >
< receive >
The <e> in <receive> is needed because no complete English word ends in <v>.
gymnasium
The vowel <y> in the middle of <gym> is a sign of Greek origin.
< been >
be + en
This homophone for <ate> is a number.
< eight >
< juice >
The <e> in <juice> marks the <c> as 'soft,' or spelling the [s] sound.
chrome
The <ch> spelling /k/ in <chrome> is a sign of a Greek origin.
< happy >
hap + y
This homophone for <do> is a deadline.
< due >
< cookie >
The <e> in <cookie> is necessary because no complete English word ends in <i>.
pterodactyl
The initial silent <p> is a sign of a Greek origin.
< birthday >
birth + day
or
bir + th + day
This homophone for < feat > can be found at the end of your legs.
< feet >
< candle >
The <e> in <candle> marks the <l> as syllabic.
rhythm
The <rh> digraph is a sign of Greek origin.
< celebration >
celebr + ate + ion
This homophone for <mist> is a past-tense verb.
< missed >