It means not enough. E.g. The man couldn't get any cash from the machine as he had insufficient funds in his bank account.
Insufficient-lacking in what is necessary or required ~Dictionary.com
Checks can bounce for more than one reason, although insufficient funds is the most common. If a stop payment order has been placed on the check, or if the account is frozen, that will also cause it to bounce.
If you're paid semimonthly, you're paid twice a month, or 24 times a year. Don't confuse semimonthly with biweekly, which is getting paid every two weeks, or 26 times a year.
Normally, there are 24 pay periods when getting paid semi-monthly. You always get paid on the 1st, 15th or 30th.
This means out of the total number of accounts you have, you have not paid on enough of them as agreed when you where issued the account. Example would be late payments.
When a person has insufficient space it means there is no room to put more things.
narrow, close, insufficient
It means not enough. E.g. The man couldn't get any cash from the machine as he had insufficient funds in his bank account.
Insufficient air flow means not enough air is moving for the task at hand. For example, a clogged filter will not let enough air through, creating insufficient air flow.
Did you mean insufficient? If so: Not enough, inadequate.
Insufficient-lacking in what is necessary or required ~Dictionary.com
Because Vitamins A and D are fat soluble, so insufficient fats mean insufficient vitamins A and D
Insufficient information is given in the question to form an opinion.
insufficient memory
insufficient egr flow
It means "not" e.g. "insufficient" vs "sufficient"