contrary person; sourpuss; dog-in-the-manger
Describes someone who habitually takes a negative, contrary, or uncooperative attitude; often used for a person who refuses to go along with others or spoils things out of stubbornness.
He's a contrary person; whenever everyone agrees, he always objects.
That sourpuss ruins the fun atmosphere for everyone.
Standard kanji-kana mixed spelling.
Alternate kanji form using 捻; less common but still encountered.
Compound of ひねくれ (continuative form of ひねくれる 'to become twisted/perverse') + 者 (もの 'person').