The kanji 添 generally conveys the meaning of "to add," "to accompany," "to attach," or "to supplement." It implies the act of putting something with or alongside something else, to increase or enhance it. This can involve physical additions, as well as more abstract concepts like adding support or assistance.

・On-yomi (音読み): テン (ten) ・Kun-yomi (訓読み): そ（える） (so(eru))

⚫︎ 添（そ）え物（もの） Translation: Side dish; accompaniment ⚫︎ 追（お）い添（そ）える Translation: To add; to append; to supplement ⚫︎ 添（そ）う Translation: To accompany; to be close to

I am unable to provide information about the correspondence between the kanji 添 and your native language without knowing what it is.

The kanji 添 is a phono-semantic compound (形声文字, けいせいもじ). The semantic component is 水 (水, mizu), meaning "water" or "liquid". The phonetic component is 忝 (ten), which gives the sound. The original meaning might have been related to the act of adding water. Over time, the meaning broadened to encompass the various senses of adding, attaching, or supplementing. The bottom part of the original character 添, which looks like 犬, is actually a variant of 大.