The spelling of the word "trexler" can be explained using the International Phonetic Alphabet (IPA) as /trɛkslər/. This phonetic transcription represents the sounds of the word. The initial "t" is followed by the "r" sound, represented by the slash. The "e" is pronounced as "eh," and the "x" as "ks." The final "l" is followed by the schwa sound, represented by the upside-down "e," and the "er" at the end is pronounced as "ur." Combining these sounds results in the proper spelling of "trexler."