Prolix

prolix \prō-ˈliks, ˈprō-ˌliks \ adjective: 1. unduly prolonged or drawn out; too long, 2. marked by or using an excess of words

Etymology: Middle English, from Anglo-French & Latin; Anglo-French prolix, from Latin prolixus extended, from pro- forward + liquēre to be fluid

Prolix may be pronounced with the stress either on the pro or the lix, but I don’t know which is prevalent. I can’t even recall having heard prolix uttered in casual conversation.