圭けい角かく

noun

rough edges; abrasiveness; harshness

Used for a person's character, words, or attitude that is sharp, unpolished, or lacking smoothness. Often appears in negative expressions like 圭角がない (lacking rough edges, mild-mannered).

• 彼かれは若わかいころは圭けい角かくがあったが、今いまは丸まるくなった。

  He had rough edges when he was young, but he has mellowed now.

• あの人ひとの話はなし方かたには圭けい角かくがなくて、誰だれとでもうまくやっていける。

  His way of speaking has no sharpness, so he gets along well with everyone.

noun

edges of a gem

Original literal meaning referring to the cut edges or facets of a gemstone. Rarely used in modern Japanese outside of literary or technical contexts.

• この宝ほう石せきは圭けい角かくが鋭するどく、光ひかりを美うつくしく反はん射しゃする。

  This gem has sharp edges and reflects light beautifully.