frustrat-, frustra-

(Latin: in vain, in error; to deceive, to disappoint)

frustratory (adjective)
Making void; rendering null; as, a frustratory appeal.
infrustrable (adjective), more infrustrable, most infrustrable
Not prone to being defeated or thwarted: Even when it was so difficult for Mary to complete the task for school, she was completely infrustrable and persevering and never gave up throughout the project.
internet fraud (s), internet frauds (pl); web fraud (s), web frauds (pl) (noun forms)
A general reference to any type of fraud scheme that uses one or more online services; such as, e-mail, chat rooms, message boards, or web sites, to present fraudulent solicitations, or scams, to prospective victims.

Used to conduct fraudulent transactions, or to transmit the proceeds of a fraud to financial institutions, or to others connected with the scam.

intrinsic fraud (s), intrinsic frauds (pl) (noun forms)
Fraud by with the use of forged documents or false claims or perjury; which misleads a court, or jury, and produces a finding for the one perpetrating the fraud or scam.
legal fraud (s), legal frauds (pl) (noun forms)
Consisting of acts, omissions, or concealments involving breach of equitable or legal duty, trust, or confidence.
refrustrate, refrustrates, refrustrated, refrustrating (verb forms)
To frustrate again.
wire fraud (s), wire frauds (pl) (noun forms)
1. A fraud, or a scam, committed by means of electronic communication; such as, with a telephone or a modem.
2. A situation where a person concocts a scheme to defraud or obtain money based on false representation or promises.

This criminal act is done using electronic communications or an interstate communications facility. Like any type of fraud, wire fraud is a U.S. federal offense. People can be found guilty for their misuse of a communication facility, regardless of whether their scheme actually defrauded anyone.