forth - right
There are many reasons to learn how to divide forthright into syllables. Separating a word like forthright into syllables is mainly to make it easier to read and pronounce. The syllable is the smallest sound unit in a word, and the separation of the forthright into syllables allows speakers to better segment and emphasize each sound unit.
Knowing how to separate forthright into syllables can be especially useful for those learning to read and write, because it helps them understand and pronounce forthright more accurately. Furthermore, separating forthright into syllables can also be useful in teaching grammar and spelling, as it allows students to more easily understand and apply the rules of accentuation and syllable division.
In the case of the word forthright, we find that when separating into syllables the resulting number of syllables is 2. With this in mind, it's much easier to learn how to pronounce forthright, as we can focus on perfecting the syllabic pronunciation before trying to pronounce forthright in full or within a sentence. Likewise, this breakdown of forthright into syllables makes it easier for us to remember how to write it.