alert
adjective/əˈlɜrt/
Frequency rank: #2,665 most common English word
Meaning
fully awake and paying close attention to what is happening.

Example sentence
The lifeguard stayed alert and watched the swimmers carefully.
Synonyms & related words
Practice this word in the quiz
More words in ranks 2,601–2,700
- sumThe total obtained by adding numbers together; an amount of money.
- swingA seat hung from ropes or chains for swinging; to move back and forth.
- tailThe part at the back of an animal's body that sticks out.
- twinOne of two children born to the same mother at the same time.
- upcomingAbout to happen or appear soon.
- arenaA large enclosed area used for sports or entertainment.
- boomA deep loud sound; a sudden increase in activity or success.
- braveWilling to face danger or pain without showing fear.
- columnA regular piece of writing in a newspaper; an upright pillar.
- commitTo promise to give your time or effort to something.