Thesaurus.com
Dictionary.com
Definitions

clear-headed

ADJECTIVE
bright
Synonyms
STRONGEST
brilliant sharp smart
WEAK
Einstein acute advanced alert astute aware brainy clever discerning eggheaded having smarts ingenious inventive keen knowing precocious quick quick-witted whiz kid wide-awake
Antonyms
STRONGEST
dull slow stupid unintelligent unstylish
WEAK
black cloudy dark depressed depressing doleful dreary dusky gloomy horrible light murky normal obscure pale pastel somber threatening typical unaware unhappy unpromising
ADJECTIVE
sober
Synonyms
STRONGEST
calm restrained sedate serious
STRONG
abstaining controlled dry moderate steady
WEAK
abstemious abstinent ascetic cold sober continent nonindulgent not drunk on the wagon self-possessed temperate took the pledge
Antonyms
STRONGEST
agitated excitable excited
WEAK
drunk immoderate inebriated irrational
ADJECTIVE
sober
Synonyms
STRONGEST
dark disciplined dispassionate down-to-earth earnest levelheaded low-key lucid no-nonsense practical quiet rational realistic reasonable restrained sedate serene serious solemn somber staid subdued
STRONG
abnegating abstaining collected composed constrained cool eschewing forgoing grave inhibited plain reserved sound steady
WEAK
cold drab hard-boiled imperturbable pacific severe soft toned-down unexcited unimpassioned unruffled
Antonyms
STRONGEST
agitated boisterous cheerful excitable excited flippant frivolous funny happy impractical insincere irrational light nervous trivial troubled unimportant unrealistic unreasonable unserious upset
STRONG
annoyed friendly worried
WEAK
drunk immoderate inebriated

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The procedure is short - usually under an hour - and demands a particularly swift, "clear-headed" recovery.

From BBC • Nov. 24, 2025

As he dug into the box, the two-time All-Star and nine-year veteran had a clear-headed game plan.

From Los Angeles Times • Jul. 15, 2024

He seems fairly clear-headed about his tenuous grasp on life, but Numa nonetheless encourages him to keep the faith.

From Salon • Jan. 23, 2024

"Our paper explains why and how building cooperative governance at the global scale is different, and helps researchers and policymakers be more clear-headed about how to work toward global solutions," says Waring.

From Science Daily • Jan. 2, 2024

I know a compliment when I hear it, but I was reluctant to accept as I was just beginning to feel clear-headed again.

From "The Name of the Wind" by Patrick Rothfuss