Meaning and Usage
"効く" (きく) primarily means "to be effective" or "to work" in the sense that something produces the intended effect. It is commonly used with medicines, treatments, or methods that have a noticeable impact.
Nuances and Contexts
Besides physical effectiveness, "効く" can also describe something that emotionally or mentally affects someone, such as words or advice. It can imply a strong influence or impression.
Common Collocations
- 薬が効く (くすりがきく): medicine works
- 効き目がある (ききめがある): to have an effect
- 効かせる (きかせる): to make something effective or to emphasize
Register and Politeness
"効く" is a neutral verb used in everyday conversation and writing. It is neither overly formal nor casual.
Learner Tips
A common confusion is mixing "効く" with "聞く" (also read きく), which means "to listen" or "to ask." Remember that "効く" relates to effectiveness, while "聞く" relates to hearing or inquiry.