The word "duling" (/'djuːlɪŋ/) refers to the act of engaging in a duel or fighting with swords. The spelling of "duling" follows the English rule of adding the suffix "-ing" to a base verb to create a present participle. The pronunciation of the word features a stressed /juː/ sound followed by an /l/ and a short /ɪ/ sound before the nasal consonant /ŋ/. Despite its infrequent use in modern English, "duling" remains a valid word in the language.