The word "versu" may seem like a peculiar spelling, but it is a valid Esperanto word meaning "versus" or "against". The spelling of "versu" follows the standard Esperanto phonetic system, where each letter represents a single sound. In IPA transcription, "versu" can be represented as /vɛr'su/. The first syllable, "ver", is pronounced with an open-mid front vowel /ɛ/ and the stress falls on the second syllable, "su", pronounced with a sibilant /s/ sound followed by an unstressed /u/ vowel.