Blacken
Definition 1 of 3
Pro Tip 1/3
Physical Change
Use 'blacken' to describe something turning dark due to physical changes like burning or dirt. The toast blackened in the toaster.
Pro Tip 2/3
No Gradual Shade
'Blacken' suggests a significant change in color, not a gradual darkening. The paper quickly blackened around the edges.
Pro Tip 3/3
Damage Implication
Using 'blacken' often implies damage, not just a change in color. The firecracker blackened the mailbox.