太 is built from the 大 and 丶 (dot) components.
It belongs to a phonetic family with 駄 and 汰 — they share the 太 component and the reading タ.
A common word using 太 is 太い (ふとい), meaning “fat, thick”.
Don't confuse it with 犬, 大, 天, and 夫 — 大 + dot = 犬 (dog); dot inside = 太 (thick); line on top = 天 (sky); line through = 夫 (husband); 失 (lose) has a leading slant
