The word "vadenais" is a Lithuanian adjective that means "related to water." It is spelled as vɐdɛnɐɪs, with the first syllable pronounced as "vuh" and the second as "dhen." The "ai" combination in the final syllable is pronounced as a long "i" sound. The final letter "s" indicates that it is a masculine noun, and if it were a feminine adjective, it would end with "-a" instead. Proper spelling and pronunciation of words is crucial in effectively communicating with others.