IPA: /ˌɒp.tɪˈmɪs.tɪk/
KK: /ɑpˈtɪmɪstɪk/
Having a hopeful and positive attitude about the future or a situation.
She is optimistic about her chances of getting the job.
Comparative: more optimistic
Superlative: most optimistic
Optimistic → It is formed from "optimus" (meaning best) and the suffix "-istic" (meaning pertaining to). The word "optimistic" describes a perspective that pertains to seeing the best possible outcome or having a hopeful outlook.
Think of 'best' ('optimus') to remember that 'optimistic' means having a hopeful or positive outlook.