- Erratic
adj. having no fixed course; deviating from the norm
The car became erratic after slipping on ice.
- Unveil
v. to make visible; to reveal
We plan to unveil our plans for the new company project on Sunday.
- Obsolete
adj. no longer used; rare or uncommon
Historians assumed record players would be obsolete by now, but in fact they're making a huge comeback.