Choose the word that describes the best antonym (opposite) of the following words.
Vigilant

Careless

The best antonym for vigilant is careless.

• Vigilant means keeping a careful watch for possible danger or difficulties.
• Careless means not paying attention or taking care.

The other options are not opposites of vigilant.

• Innocent means not guilty of any wrongdoing.
• Ignorant means lacking knowledge or awareness.
• Irresponsible means not taking responsibility for one's actions.