The spelling of the word "ACTRWG" can be explained using the International Phonetic Alphabet (IPA). The sound "a" in the beginning of the word is represented by the IPA symbol /æ/. The sound "k" is represented by /k/, "t" by /t/, "r" by /ɹ/, "w" by /w/ and "g" by /ɡ/. Therefore, the IPA transcription for "ACTRWG" would be /æktɹwɡ/. While this sequence of letters may not have a meaning, it shows how the IPA can effectively explain the phonetic sounds of any word.