\[EmptyRectangle] (Mathematica Character Name)

Unicode: 25AF. Letter-like form.

\[EmptySet] (Mathematica Character Name)

Unicode: 2205. Alias: Esc es Esc. Letter-like form. Not the same as \[CapitalOSlash] or \[Diameter].

\[EmptySmallSquare] (Mathematica Character Name)

Unicode: 25FB. Alias: Esc essq Esc. Letter-like form. Not the same as the operator \[Square]. Not the same as \[Placeholder].

\[EqualTilde] (Mathematica Character Name)

Unicode: 2242. Alias: Esc =~ Esc. Infix similarity operator. x ≂ y is by default interpreted as EqualTilde[x,y].

\[Eth] (Mathematica Character Name)

Unicode: 00F0. Alias: Esc d- Esc. Letter. Included in ISO Latin-1. Used in Icelandic and Old English.

\[Euro] (Mathematica Character Name)

Unicode: 20AC. Letter-like form. Sign for euro European currency, as in € 5.

\[Exists] (Mathematica Character Name)

Unicode: 2203. Alias: Esc ex Esc. Compound operator. ∃_xy is by default interpreted as Exists[x,y].

\[FilledCircle] (Mathematica Character Name)

Unicode: 25CF. Alias: Esc fci Esc. Letter-like form. Used as a dingbat.

\[FilledDiamond] (Mathematica Character Name)

Unicode: 25C6. Letter-like form.

\[FilledDownTriangle] (Mathematica Character Name)

Unicode: 25BC. Letter-like form.