Adequacy means being sufficient or good enough for a particular purpose. When something has adequacy, it meets the minimum requirements or standards needed, even if it's not exceptional or perfect.

If you pack adequate supplies for a camping trip, you have enough food, water, and gear to be safe and comfortable. If a bridge has structural adequacy, engineers have determined it's strong enough to safely carry traffic. When a teacher evaluates the adequacy of your essay, they're checking whether it properly addresses the assignment and meets the basic requirements.

The word often appears in serious contexts where meeting standards matters. A doctor might question the adequacy of a patient's nutrition, meaning they're concerned the person isn't getting enough nutrients to stay healthy. A fire marshal checks the adequacy of emergency exits in a building to ensure people can escape safely.

Adequacy sits in an interesting middle ground. It's not excellence or perfection, but it's not failure either. Having adequate skills means you can do the job, even if you're not the most talented person available. Sometimes adequacy is exactly what's needed: adequate shelter keeps you dry, adequate rest helps you function, and adequate preparation lets you handle what comes your way. Other times, like preparing for a big performance or competition, you might want to push beyond adequacy toward real excellence.