痛快 tòngkuài delighted
delighted; to one's heart's content; straightforward
How to remember 痛快: 痛 ache + 快 quick = delighted.
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How it is used
- Two shades: (1) satisfying/exhilarating - 玩得很痛快 (wán de hěn tòngkuài) had a great time; (2) straightforward/frank - 他答应得很痛快 (tā dāying de hěn tòngkuài) he agreed readily, no fuss.
- The core is 'unblocked, to your heart's content' - either a release of feeling or a decisive, no-hedging manner.
- Colloquial and warm; 痛痛快快 (tòngtòngkuàikuài) intensifies it.