to be effective; have effect; act upon / to work; to hold; to have / (of system) to be able to be applied; can be used

straight, not bent

直ぐ: immediately, right away, soon / 直ぐ: quick to / 直ぐ: right next to, right close by

(obsolete) 過ぐ: classical form of modern 過ぎる (sugiru, “to go through, to go past; to exceed”)

(obsolete) 挿ぐ: classical form of modern 挿げる (sugeru, “to connect or affix one thing to another, especially by passing something through something else”)

直ぐに: immediately

A substance with mystical properties, especially one that has an effect on the body, health, or lifespan.

immediately, instantly

(rare) male bear

a straight temper line on a blade