1. comparative form of grotty; more unpleasant, dirty, or of poor quality
Usage: British informal

Examples

• The bathroom upstairs is even grottier than the one downstairs.
• His apartment got grottier each week as he avoided cleaning.
• The weather turned grottier as the day went on.
• She found a grottier hotel room than she had expected.
• The old building looked grottier after years of neglect.
• This part of town seems grottier than where we used to live.