What ▼ means
It points down or marks expanded content. In plain text it works as a compact pointer: see below, lower item, decrease. The surrounding words decide the reading.
In dropdown and disclosure controls, ▼ commonly means the hidden branch is open. A sideways marker suggests collapsed content; ▼ shows the revealed list.
The shape belongs to the wider family of typographic dingbats used for direction and emphasis. As of 2026, the sources checked do not establish when this exact black triangle first appeared.
Neutral and technical in documents; in a personal message it reads like a dropdown marker, not a warm reaction.
Do not expect ▼ alone to communicate an emotion.
Don't confuse it with
1Questions people ask
1Is ▼ the alchemical symbol for water?
No. The water association belongs to the outline downward triangle, while ▼ is the filled typographic form; readers may still link the shapes informally.
How to type ▼
▼\25BCCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.