Without qualification

• Total
• Someone who expresses in language
• Word producer
• Someone who talks (especially someone who delivers a public speech or someone especially garrulous)
• Used informally as (often pejorative) intensifiers
• One just saying

Wiktionary Word definitions in Wiktionary
n. One who utters something.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Utterer \Ut"ter*er\, n. One who utters. --Spenser.

WordNet Word definitions in WordNet
n. an organism that can utter vocal sounds; "an utterer of foul oaths"; "is the giraffe a vocalizer?" [syn: vocalizer , vocaliser ] someone who circulates forged banknotes or counterfeit coins someone who expresses in language; someone who talks (especially ...