dormitive

9.9

Making someone feel sleepy

adjective
/ˈdɔːrmɪtɪv/

Archaic

: dormitivo

Many over-the-counter medications have dormitive properties that can aid sleep.

Examples

The warm, dormitive tea helped her relax after a long day.
Unamuno is certainly as much interested in setting up and maintaining "dormitive principles" as Foucault and Barthes are in taking them apart.

Academic text (1990)
You couldn't load a pistol with dormitive virtue and shoot it into a breakfast roll. - CS Pierce

Blog text (25)
After taking the dormitive pill, he quickly fell into a deep slumber.

Synonyms

soporific

vsdormitive

3 8.6

Making you feel sleepy

emphasizes causing sleep rather than simple drowsiness

somniferous

vsdormitive

Specialized

9.9

Causes someone to sleep or feel very sleepy

means the same sleep-inducing effect and is interchangeable

soporiferous

vsdormitive

Formal

9.9

Making someone feel very sleepy

means the same and differs only by choice of word

somnific

vsdormitive

Specialized

9.9

Making someone feel sleepy or fall asleep

states direct sleep production rather than only a tendency

slumbrous

vsdormitive

Literature

9.9

A calm, quiet mood that makes you feel sleepy

focuses on causing sleep rather than merely suggesting quiet drowsiness

slumberous

vsdormitive

Literature

7.6

Calm and quiet in a way that makes you feel sleepy

points to inducing sleep directly, not only creating peaceful calm

Antonyms

stimulant

5.1

Causing the body or mind to become more active

Compounds

dormitive virtue

Archaic

9.9

A quality that makes someone or something fall asleep

How Sleep-Inducing

narcotic

NSFW

1 7.3

soporific

3 8.6

dormitive

Archaic

9.9

calming

6 2.6

Surface Forms

dormitive positive

Morphology

dormitive = dorm (semi-transparent) = dorm + itive

Formally looks like 'dorm-' (sleep) + a Latinate adjectival ending meaning 'causing', but the formation is learned/rare and not fully productive in modern English.

Etymology

Dormitive comes from the Latin root dorm- meaning 'sleep', the same root you see in dormitory and dormant. So a dormitive thing is one that makes you sleepy or causes sleep.