This is the 7596th most frequent Japanese word.
利い
"利い" is not a standard Japanese word. It might be a typo or misinterpretation.
In this sentence, '利い' describes the tool as being convenient or advantageous, emphasizing its usefulness.
この道具は非常に利いです。
This tool is very useful.
Here, the term '利' is utilized within '利益' (rieki, meaning benefit or profit), showcasing its role in conveying advantage or benefit contextually.
彼は人々の利益を考えて行動しています。
He acts considering people's benefits.
The word '利く' (kiku, to be effective) derives from '利' and illustrates functionality or effectiveness in context.