Trepidation is a scared, nervous, worried feeling.
TREP ih DAY shun
Part of speech:
(Like "milk," "rice," and "advice," uncountable nouns are words for stuff that can’t be broken into exact units. You talk about "some milk," "the rice," and "a lot of advice," but you don’t say "a milk," "three rices," or "many advices."
Likewise, talk about "the trepidation," "this trepidation," "their trepidation," "such trepidation," "no trepidation," and so on,
but don’t say "a trepidation," "one trepidation," or "trepidations.")
Other forms: trepidatious, trepidatiously
How to use it: "Trepidation" is a formal word you can pick instead of "fear," "anxiety," "worry," "nervousness," "uneasiness," and so on.
Talk about people having, feeling, or experiencing trepidation, often about or over something: "her trepidation about applying to schools abroad," "his trepidation over the shrinking budget."
You can share, voice, or express your trepidation. And you can approach something with trepidation, agree to something with trepidation, begin a task with trepidation, watch or monitor something with trepidation, or greet a change, an event, or a situation with trepidation.
The adjective is rare, but people will easily understand it, so go for it: talk about trepidatious people, trepidatious movements, trepidatious comments and questions, a trepidatious attempt or offer, a trepidatious silence, etc.
examples: He voiced his trepidation about letting so many preschoolers play in our unfenced yard.
I remember the trepidatious excitement of mailing off my application for graduate school.