Noun
adware (uncountable)
(computing) A software application that includes advertisements, which are displayed while the software is running. Developers use adware as a source of income and to keep the costs of the software down (usually making it free). Some adware programs can include spyware.
Adware is usually seen by the developer as a way to recover development costs, and in some cases, it may allow the software to be provided to the user free of charge or at a reduced price. Source: Internet
Also known as adware, these hidden programs come bundled with certain applications and secretly transmit user information via the Internet to advertisers. Source: Internet
However, if they appear even after your browser is closed and are shady, you could be dealing with an adware that is causing the pop-ups. Source: Internet
But this service level bars customers from hosting nastier content, such as malware, spyware, adware, exploits, viruses, and phishing sites. Source: Internet
IMHO sponsorship revenue from insidious adware toolbars is to be avoided at all costs if you don’t want to p*ss off your potential buyers beyond belief. Source: Internet
In fact, McAfee attributes much of the rise in macOS malware specifically to a “glut of adware.” Source: Internet