An antonym for alert would be notify or inform.
The antonym word for Ratlines would be Disratlines
A close antonym would be shrinkage.
The antonym (opposite) of opposite would be same, similar, or alike.
As a segment means a piece or fraction, the antonym would be *whole*
An antonym for stagger could be "balance" or "steady."
Unalert is alert's antonym or opposite.
An antonym for tired would be energized or refreshed.
Asleep, not paying attention, lazy
An antonym for "drowsy" is "alert." While drowsy describes a state of sleepiness or lethargy, alert conveys a sense of wakefulness and readiness. Other possible antonyms include "awake" and "vigilant."
informal
No. AN antonym for deceased would be alive. An antonym for friendly would be unfriendly or hostile.
No. An antonym for answer would be unknown or mystery.
Elation would be an antonym.
There would not be an antonym for equipment.
In the sense of 'lewd', an antonym would be 'conservative' or 'puritanical'. In the sense of 'slippery', an antonym would be 'sticky'.
synonym would be contemplated. antonym would be disregarded.
The antonym of prehistoric would be, modern.