The spelling of the word "ANTIFXA" might seem confusing at first glance, but it can be explained using IPA phonetic transcription. The "X" in this word represents a voiceless velar fricative sound, similar to the "ch" in the word "loch." The "A" is pronounced as a short "ah" sound, and the "NTI" is pronounced as "an-tie." Altogether, "ANTIFXA" is pronounced as "an-tie-f-khah." Despite its unconventional spelling, this word is commonly used in medical contexts as an abbreviation for "antifibrinolytic."