The word "adgas" is spelled with five letters, starting with the vowel sound "a" as in "apple." The letter "d" represents the voiced dental plosive sound /d/. The following letters "g" and "a" together create a diphthong pronounced as /æ/ as in "cat." The final letter "s" represents the voiceless alveolar fricative sound /s/. Therefore, the word "adgas" can be phonetically transcribed as /ˈædɡæs/.