Other forms: teasers
A teaser is an advertisement that hints without explaining. A teaser campaign, release a teaser, teaser trailer.
The gap is the mechanism — curiosity is uncomfortable, so a teaser that withholds the product makes people look for it. A teaser trailer is shorter than a full one and often made long before the film is finished. Note tease beneath it.
teaser is an advertisement.
Proto-West Germanic
*taisijan — to separate, tug, shred
Old English
tǣsan — to tease
Middle English
tesen
English
tease
English, today
teaser
From tease + -er. tease comes from Middle English tesen, from Old English tǣsan (“to tease”), from Proto-West Germanic taisijan (“to separate, tug, shred”).
Etymology from Wiktionary, CC BY-SA