The correct spelling of the phrase "gat better" is actually "got better." The simple past tense of the verb "get" is "got" and not "gat." The IPA phonetic transcription for "got" is /ɡɒt/. The vowel sound in "got" is the same as in "lot" or "hot," represented by the symbol /ɒ/. It is pronounced with a short and rounded sound that is produced at the back of the mouth.