infinitesimal - 극소의, 매우 작은

• There are some careers where you can’t afford to make even the most infinitesimal mistake without disastrous consequences.
• According to the label on this supplement, possible side effects are infinitesimal compared to the many valuable benefits.
• Although Faye’s complaint about her little brother may have seemed like an infinitesimal matter to her parents, it was extremely important to her.