"speaking ability" is an acceptable phrase to use in written English.
Example sentence: My students' speaking ability has greatly improved since the beginning of the semester.
Tells about his speaking ability, education, career & personal life.
His speaking ability — a proxy for his debating skill — is average, which is to say, polarizing.
It hits all the major points of language instruction – speaking ability, translation and listening comprehension.
Earlier in the day, Mr. Straniere mocked his rival's speaking ability and education.
Slight net negative: First, women in both groups were impressed with Palin's speaking ability and poise.
First, it is possible that people would simply attribute the speaking ability to the technology and not to the animal.
But Brian Kelly's engaging personality, political skill and public speaking ability make him an ideal modern coach.
These scenes also get laughs because Mr. Smith clearly has an astounding amount of confidence in his speaking ability.
He wrote Dr. Morens on April 3 that the faculty committee's "remark about having an extremely poor speaking ability did it".
The new procedure minimized scarring, entailed one operation instead of the two that had previously been required and improved the patient's speaking ability.
