Legal Definition
Insufficient refers to a deficiency in quantity, quality, or scope, indicating that something is lacking the necessary amount or degree required by a legal standard or requirement.
Plain-English Translation
Imagine you need a certain amount of something for a contract or rule, but 'insufficient' means you don't have enough. For example, if a court says a person needs to prove a crime happened, but the evidence presented is 'insufficient,' it means the proof isn't strong enough.