Synonyms of insomnia

insomnia

noun

in-ˈsäm-nē-ə 

as in restlessness

the inability to obtain adequate sleep

has suffered from insomnia virtually his entire life

Synonyms & Similar Words

• restlessness
• wakefulness
• sleeplessness
• alertness

Antonyms & Near Antonyms

• drowsiness
• sleepiness
• narcolepsy

Example Sentences

Recent Examples of insomnia

For people experiencing insomnia and other sleep issues, other supplements may also help improve rest. — Kirstyn Hill, Health, 1 July 2026

Those included headaches, insomnia, light and noise sensitivity, brain fog, anxiety, confusion, joint pain, disordered eating, nausea and weight loss and gain. — Emily Blackwood, PEOPLE, 30 June 2026

The extreme heat can also affect people who are physically ill, especially those with heart disease or high blood pressure, or who take certain medications, such as for depression, insomnia, or poor circulation. — Justin Muszynski, Hartford Courant, 29 June 2026

Issues could include insomnia, aggression, difficulty concentrating, sensitivity to psychotropic medication and exacerbation of existing mental illness -- like anxiety, depression and schizophrenia. — Mark Prussin, CBS News, 29 June 2026