What type of ions have names ending in ide?

It's common to mistake that only Halides have names ending with - ide

However, there are many other ions that aren't Halides, but still have the suffix

Examples include:

Cyanide - [CN] (-)

Sulfide - [S] (2-)

Nitride - N (3-)

Oxide - O (2-)

Peroxide - [O2] (2-)

Halide - H (-)

In case you haven't noticed, all the - ides I have mentioned have negative charges

So, there's your answer. Negatively charged ions, or anions, usually have names ending in - ide

The Halides ...

The Elements of Group VII

Flouride

Chloride

Bromide

Iodide ...