Easily nervous or prone to worry; having a nervous disposition and getting anxious over small things.
彼は初対面の場だといつも神経質になってしまう。
He always gets nervous when meeting someone for the first time.
試験前は神経質になって眠れなかった。
I was so nervous before the exam that I couldn't sleep.
神経質な性格の人は些細な音でも気になることがある。
People with nervous temperaments can be bothered even by small noises.
Fussy or particular; worrying about petty details and being hard to please—often with a slightly negative nuance.
あの上司は神経質で、書類のフォントまで細かく指摘する。
That boss is fussy and even criticizes the font used in documents.
神経質になって何度も確認するのは悪いことではないが、ほどほどが大事だ。
Being overly fussy and checking things repeatedly isn't always bad, but moderation is important.
彼女は細かいことに神経質だから、プレゼント選びが大変だ。
She's picky about small details, so choosing a present for her is hard.