Onetime and Worn-out

Onetime adjective - Happening only once.

Worn-out and onetime are semantically related. In some cases you can use "Worn-out" instead an adjective "Onetime".

Worn-out adjective - Depleted in strength, energy, or freshness.

Onetime and worn-out are semantically related. Sometimes you can use "Onetime" instead an adjective phrase "Worn-out".