乐观用英语怎么说

乐观optimsm（名词）乐观的 optimstic（形容词）用法：be optimistic about sth 派生词：optimist 乐观主义者

optimistic

乐观 [词典] optimistic; optimism; sanguine; hopeful; hope for the best; [例句]这不是乐观，这是妄想。This was not optimism, it was delusion.

optimism 名词optimistic 形容词