Is there a stem word with the meaning sing?

There isn't a single stem word in English that directly means "sing". However, there are a few options depending on how you want to use it:

Latin roots:

* Cant-: This stem is often used in words related to singing, like "canticle" and "incantation". It means "song" or "chant".

* Voc-: Means "voice", and is used in words like "vocal" and "vocalist", which are directly related to singing.

Greek roots:

* Od-: Meaning "song" or "ode", it's used in words like "ode" and "melody".

Other options:

* Song-: This isn't a true stem but is frequently used as part of compound words related to singing, like "songbird" and "songstress".

It really depends on the context of what you're trying to convey. Think about whether you're focused on the act of singing, the resulting music, or the voice itself.