詠 is built from the 言 and 永 components.
It reads エイ like 永, as do 泳 — learn 永 once and the family's reading comes with it.
A common word using 詠 is 詠む (よむ), meaning “to compose (a Japanese poem); to write”.
Don't confuse it with 永, 泳, 氷, and 水 — 氷 (ice) is 水 with a dot; 永 (eternal) has a dot and a top stroke
