PNG ICO ICNS SVG MORE
Business & finance
Glyph
Font Awesome
warning
Black
512x512
PNG ICO MORE
Signs & symbols
Buttons
Burn, Alert, warning
Mixed
Basic icon element
danger, warning, safety
Free Misc Icon Set 2
Error, sign, fill
Error, Alarm, warning
Simple Geometric Icons
Exit, delete, Close
Locations - Solid
training, ride, Bikes
PNG SVG MORE
Simple darkcon
warning, Error, skull
324x512
problem, warning, Caution
Icons prohibition
prohibition sign, warning, impossible
prohibition sign, prevention, prohibiting sign
impossible, prohibition, prohibiting sign
roller skates, prohibition, impossible
prohibition, prevention, Cigarette
prohibiting sign, interdiction, prohibition
prohibiting sign, prohibition sign, impossible
impossible, prohibition sign, prevention
Bicycle, interdiction, prevention
prohibition sign, impossible, prohibition
UI
Google Material Design icons
Very Basic. Android L (Lollipop)
problem, Attention, warning
Material Core
sign, warning
Geomicons
