Dyslexia is defined as
... a specific learning disability that is neurobiological in origin. It is characterized by difficulties with accurate and/or fluent word recognition and by poor spelling and decoding abilities. These difficulties typically result from a deficit in the phonological component of language that is often unexpected in relation to other cognitive abilities and the provision of effective classroom instruction.
It's frequently popularized as just scrambling the letters of words, but the dyslexiaida.org site is very clear that it is not limited to that.
But my question is about speaking difficulties. Dyslexiaida.org states
People with dyslexia can also have problems with spoken language,
however, reading further on the site, it is at least strongly implied that this mostly pertains to difficulties reading aloud and difficulties with pronunciation that were acquired due to errors in reading.
Many years ago, I accidentally referred to myself as the wife of my then-wife, rather than her husband, due to _________.
Generally, when I experience this, I will think the right word, but say the wrong word. The word spoken will often be related in some way to the word desired.
Note that this is not always what's going on in my head when I get left and right mixed up. As a left-handed person, having been taught the mnemonic "Your right hand is the hand you write with." even 40 years later I'll sometimes genuinely get them mixed up. I don't care if the word covers this class of mistake, too, or not.
Possibly related would be the tendency to sometimes accidentally rearrange syllables. While I'd be interested to know this, I'm not nearly as interested, as it's a very rare occurrence in the people with whom I interact. (Example: one time I said "lexdysia" when I meant to say "dyslexia". The first time I attempted to share about that issue, I accidentally said "dyslexia" when I intended to deliberately say it wrong again.)
While I am American, I have a preference for being able to communicate with people from all over the world as much as is feasible for a hopelessly monolinguistic person such as myself, so I'm not using country-specific tags.
Notes: dysarthria is difficulty speaking due to brain damage or changes later in life. It's also a muscular thing, rather than using the wrong word. The difficulties that I'm asking about in this post have been things that the people who struggle with them have had to deal with their whole lives.
Dystonia is difficulty speaking due to muscle control issues.
Dysprosody is a false accent.
Aphasia is, among other things, the inability to find the right word to use. In the case I'm talking about, the right word is known, and even thought, just not said.
I would think this would fall in the range of semantic disorders, but it's pretty distinct from the most common semantic disorders listed.
Speech difficulty is much too general, that's all of these things.