気さく, きさく
NA-adjective
friendly, openhearted, sociable, amiable, good-humored, good-humoured, frank, candid, willing, ready
ある意味では、丁寧語は気さくな雰囲気を壊す。
だ
Auxiliary verb, copula, See である, See です, plain copula
be, is
た, だ
Auxiliary verb, だ after certain verb forms; indicates past or completed action
1. did, (have) done
indicates mild imperative
2. (please) do