pre-noun adjectival
Describes a person, appearance, or manner as rough, unrefined, or lacking polish. Often used in literary or slightly old-fashioned contexts.
むくつけき男が突然現れた。
A coarse-looking man suddenly appeared.
彼のむくつけき態度に周囲は戸惑った。
People around him were bewildered by his uncultured attitude.