Translation Japanese English: 気心の知れた

1 accurate, assured, authentic, authoritative, certain, classic, classical, confident, convinced, correct, decisive, definite, definitive, dependable, exact, firm, foolproof, for sure, good, honest, incontrovertible, indisputable, irrefutable, positive, precise, reliable, right, safe, secure, sound, strong, sure, sure-footed, surefooted, true, trusted, unafraid, unfailing, untroubled.

2 authentic, close, faithful, fast, firm, loyal, reliable, staunch, steadfast, sure, true, truehearted, trusted, trustworthy, trusty, unswerving.