speech disorder
speech defect
defect of speech

She used to say that correcting speech defects in children was just showing them an alternative way of getting the right sounds.

As it went on, Blade began to wonder if the man had some sort of speech defect.

Her voice so disoriented me at first that I thought she had a speech defect.

Could she talk children into a speech defect?

'Because if they had, she would have spoken with a speech defect for the rest of her life.'

Some children continue to have speech defects after the surgery because of muscle problems in the palate.

As a consequence, he suffered from a speech defect during his entire life.

He seemed to have a slight speech defect There was something familiar about him.

This speech defect may apply equally to native speakers as to foreign learners.

In him the Hill drawl sounded like a speech defect he had never grown out of.