Learner's definition of SUFFICIENT
[more sufficient; most sufficient]
having or providing as much as is needed
see also self-sufficient
A brisk walk is sufficient to raise your heart rate.
A 15 percent tip is sufficient. [=adequate]
There must be sufficient funds in your bank account to cover the check.
Her explanation was not sufficient to satisfy the police.
He was sufficiently bothered by the noise to complain to the manager.
Her health has improved sufficiently to allow her to return to work.
Make sure that the temperature is sufficiently cool.