(i) think about what you are going to say before you open your mouth so that your words will be the right ones,
(ii) choose the right words with which to express what you mean,
(iii) know when to stop speaking,
(iv) make yourself audible,
(v) clearly articulate consonants and vowels so that the listener will be able to recognize the spoken word,
(vi) take the trouble to pronounce words correctly so that they will not be misunderstood or mistaken for other words,
(vii) speak at a speed at which a listener can comprehend what is being said,
(viii) repeat yourself only when it is necessary to do so, (ix) refrain from speaking any word if you are unsure of its meaning, and
(x) if necessary, prepare and rehearse the words you intend to speak, so as to say them with meaning and feeling, thus maximizing their impact.
Unless a person suffers from a physical or psychological
defect that cannot be remedied with the aid of a suitably qualified speech
therapist, there is no excuse for failing to observe these rules. Contrary to
the opinion of some people I have encountered, it is neither frum nor a sign of
one’s humility to mumble when talking to others or giving a shiur. It is an
acute discourtesy. Another egregious form of discourtesy is speaking to another
person or to an audience in a language that you know they do not understand,
when you are perfectly capable of speaking to them in a language you share with
them.
Anyone who studies Torah and takes the correct articulation of his words seriously is set to receive many benefits. For example: (i) saying words aloud makes them easier to recall than merely scanning them with one’s eyes; (ii) words misspoken can be helpfully corrected by one’s teacher or chavruta; (iii) by repeating his words enough times, a person can quote them both accurately and fluently; (iv) one’s learning can be more effectively internalized and understood.