1.
effective, productive
Producing a desired or intended result; having an effect.
効果的に時間を使う。
To use time effectively.
この薬は風邪に効果的です。
This medicine is effective against colds.
効果的な学習方法を探しています。
I'm looking for an effective study method.
効果的 is a na-adjective meaning effective or productive.
FORMS:
- Adverbial: 効果的に (effectively)
- Noun stem: 効果 (effect, result)
COMMON PATTERNS:
- 〜に効果的: effective for/against ~
- 効果的な方法: effective method
- 効果的に使う: to use effectively
SIMILAR WORDS:
- 有効: valid, effective (often for tickets, contracts)
- 効率的: efficient (focus on minimal waste)
Common in business, medical, and educational contexts.