conversational
The word for the omission of a sound in speech is "elision." Elision refers to the removal or omission of certain sounds or syllables in spoken language, often to aid in pronunciation or to make speech more fluid.
Try applying more pressure on your bow and play closer to the bridge. Make sure you're playing each note in tune to make it sound better.
Practicing a speech helps a speaker become more familiar with the content, refine delivery, and build confidence. This can lead to improved fluency, better pacing, and a stronger connection with the audience.
Surer is a word but it does sound awkward in both text and speech. I think that more sure sounds better, but Microsoft Word seems to disagree.
The bathroom tiles make your voice sound more resonant.
Americans love speech. Since we founded the country, we have loved speech-making and the sound of words. Americans just like using idioms and slang to make speech more colorful and interesting.
It makes the speech sound more poetic
They allow the audience to form mental pictures that help them make connections.
To make yourself sound congested, you can alter your voice by speaking with a nasal tone, adding a slight raspiness or hoarseness, and incorporating more pauses or breaks in your speech to mimic the feeling of congestion.
What is meant by vibrato is a tremor, usually in long notes, to make the note more identifiable and to make it sound better...
A xenophone is a sound in speech which is not native to the language being spoken, or, more broadly, a sound within a foreign language.
You'd have to define "better", and also exactly what you're seeking - we don't know if you're trying to deal with squealing noise, grinding noise, etc. or you want your car to sound more tuned.