dormant

That old dog was dormant for so long he was confused for a furry doormat, but a doormat is likely to stay dormant, or inactive, because it is lifeless: that old dog has some life in him yet.

Volcanoes are described as dormant when they stay cool for a long time, without spewing hot lava and ash. They may have the ability to come to life, but they remain dormant, or inactive. Dormant comes from French dormir, "to sleep," and it refers to living things that are on a break rather than things that have died. Being dormant is being temporarily at rest, although sometimes, as with some cancer cells, things become permanently — and thankfully — dormant.

Definitions of dormant
1

adj inactive but capable of becoming active

“her feelings of affection are dormant but easily awakened”
Synonyms:
abeyant
inactive
not active physically or mentally

adj in a condition of biological rest or suspended animation

dormant buds”
Synonyms:
hibernating, torpid
asleep
in a state of sleep

adj (of e.g. volcanos) not erupting and not extinct

“a dormant volcano”
Synonyms:
inactive
quiescent
being quiet or still or inactive
Antonyms:
active
(of e.g. volcanos) erupting or liable to erupt
eruptive
actively spewing out lava
show more antonyms...

adj (heraldry) lying with head on paws as if sleeping

Synonyms:
sleeping
unerect
not upright in position or posture

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