spy
There are many reasons to learn how to divide spy into syllables. Separating a word like spy 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 spy into syllables allows speakers to better segment and emphasize each sound unit.
Knowing how to separate spy into syllables can be especially useful for those learning to read and write, because it helps them understand and pronounce spy more accurately. Furthermore, separating spy 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 spy, we find that when separating into syllables the resulting number of syllables is 1. With this in mind, it's much easier to learn how to pronounce spy, as we can focus on perfecting the syllabic pronunciation before trying to pronounce spy in full or within a sentence. Likewise, this breakdown of spy into syllables makes it easier for us to remember how to write it.