misenunciate means to mispronounce due to poor articulation. Lexicurio rates it Rare gem — a strength score of 82 out of 100.
Etymology
From mis- + enunciate.
verb
- To mispronounce due to poor articulation.“The training is not primarily intended for children who merely mispronounce or misenunciate or express themselves inaptly, unidiomatically and incorrectly for reasons other than defects of speech.”