The spelling of the word "SLAK" can be explained through its International Phonetic Alphabet (IPA) transcription: /slæk/. The first sound is the voiceless alveolar fricative /s/. The second sound is the lax vowel /æ/. Finally, the last sound is the voiceless velar plosive /k/. This combination of sounds creates the word "SLAK," which can be used as a verb to mean to lessen in intensity or slacken. Proper spelling is important in conveying the intended meaning of words in communication.