Thwart is a four-syllable word pronounced \THwɔrt\ with the emphasis placed on the second syllable.
To begin, the \TH\ sound is created by pressing the tip of your tongue to the back of your upper teeth and releasing a puff of air. This sound is often referred to as a “voiceless dental fricative”.
The \w\ sound is created by forming a tight circle with your lips and releasing a steady stream of air. This is often referred to as a “labiodental approximant”.
The \ɔ\ sound is created by relaxing your lips and slightly opening your mouth while making a low, round sound. This is often referred to as an “open-mid back rounded vowel”.
The \rt\ sound is created by pressing the tip of your tongue to the back of your upper teeth and releasing a puff of air. This is often referred to as an “alveolar approximant”.
To summarize, the correct pronunciation of thwart is \THwɔrt\ with the emphasis placed on the second syllable.
With practice and repetition, you will be able to confidently pronounce this word and others like it.