潤滑剤(じゅんかつざい)

じゅんかつざい
noun
lubricant; grease
1. lubricant; grease; lubricating agent
a substance applied to surfaces to reduce friction and wear
機械(きかい)に潤滑剤(じゅんかつざい)を塗(ぬ)る。
To apply lubricant to machinery.
ドアがきしむので潤滑剤(じゅんかつざい)を差(さ)した。
The door was squeaking, so I applied lubricant.
If you don't replenish the lubricant regularly, the parts will wear out.
2. lubricant (figurative); social lubricant
something that makes interactions, processes, or relationships run more smoothly
ユーモアは人間関係(にんげんかんけい)の潤滑剤(じゅんかつざい)だ。
Humor is a social lubricant.
お酒(さけ)はコミュニケーションの潤滑剤(じゅんかつざい)になることがある。
Alcohol can serve as a social lubricant.
Casual conversation plays an important role as a social lubricant in workplace relationships.

Composed of 潤滑(じゅんかつ) (lubrication; smoothness) + 剤(ざい) (agent; preparation). The literal meaning is straightforward — a substance that reduces friction. The figurative meaning, especially in the phrase 人間関係(にんげんかんけい)の潤滑剤(じゅんかつざい), is commonly encountered in Japanese essays and conversation.

Common collocations

Similar words