To crowd together in disorder; to fill or cover with things in disorder; to throw into disorder; to disarrange; as, to clutter a room.

The amount of time devoted to nonprogram content (advertising, promotions, public service announcements) on a particular medium.

Excessive amounts of advertising carried by a station from other political advertisers.

a term used primarily by the spot image/awareness TV advertising industry to denote multiple commercial messages in a short period of time making it difficult for the individual spot commercial to stand out from the crowd. Commercial breaks can last two to four minutes, where it's possible to have as many as eight to sixteen different commercial messages.

The extent to which a publication's pages are fragmented into small blocks of advertising and/or editorial.

Clutter is a term used to describe the phenomenon of a marketplace being full or even overcrowded with products. It also refers to the extreme amount of advertising the average American sees in their daily lives. Clutter is a major problem for marketers and advertisers.