Synonyms of drowsiness

drowsiness

noun

as in sleepiness

the quality or state of desiring or needing sleep

we tried to fight our drowsiness but fell asleep anyway

Synonyms & Similar Words

• sleepiness
• fatigue
• somnolence
• sleeping
• resting
• tiredness
• lethargy
• slumbering
• doziness
• weariness
• torpidity
• sluggishness
• torpor
• lassitude
• dozing
• oversleeping

Antonyms & Near Antonyms

• insomnia
• consciousness
• wakefulness
• awareness
• sleeplessness

Example Sentences

Recent Examples of drowsiness

Provincial traffic police said driver fatigue and drowsiness caused the crash. — ABC News, 26 Sep. 2026

Overdosing on the drug can cause extreme drowsiness, confusion, impaired coordination, decreased reflexes, respiratory depression, coma and possible death. — Natasha Holt, FOXNews.com, 5 Sep. 2026

Mild effects, such as drowsiness, headache, insomnia, nausea, and vomiting, are common. — Encyclopedia Britannica, 28 Aug. 2026

But Peasley also lives with Type 1 diabetes and wanted to avoid the potential fogginess and drowsiness that can accompany anesthesia. — Marlee Ginter, CBS News, 28 Aug. 2026

Taking multiple products with sedating effects can increase drowsiness or cause interactions. — Ayesha Gulzar, Verywell Health, 14 Aug. 2026

These older medications were also likely to increase cognitive impairment, such as drowsiness, confusion, slowed thinking, or diminished school or work performance, according to the study authors. — Rob Williams, EverydayHealth.com, 30 July 2026

It is also known to cause side effects, including drowsiness, sedation and dizziness. — Mary Walrath-Holdridge, USA Today, 12 June 2026

The devices detected increases in brain waves linked to relaxation and focus – theta, theta-alpha, alpha and beta-1 brain waves – while measuring decreases in delta and gamma-1 brain waves, which suggest less drowsiness and less mind-wandering. — Jacqueline Howard, CNN Money, 7 June 2026