unexplosive

Incapable of blasting

Unexplosive describes something that lacks the capacity or tendency to explode.

The term appears in technical contexts describing stable compounds or materials: The mixture proved unexplosive under normal conditions.

Figuratively, it can describe situations or personalities that remain calm rather than volatile: an unexplosive temperament.

inert

nonreactive

Chemically inactive substance

unreactive · neutral · passive · noncombustible · nonflammable · nonvolatile · fireproof · safe · defused · disarmed

calm

stable

Secure and unchanging

serene · unexcitable · composed · collected · unflappable · even-tempered · imperturbable · levelheaded · cool · unflustered

dull

unexciting

Lacking in interest

lackluster · anticlimactic · underwhelming · tepid · muted · subdued · tame · uneventful · unremarkable · forgettable

Opposites
physical volatility

unexplosiveexplosive

Prone to sudden detonation

volatile · detonable · combustible · incendiary · dynamite

metaphorical intensity

unexplosiveexplosive

Prone to sudden detonation

volatile · incendiary · fiery · combustible · powder keg

danger/safety

unexplosivedangerous

Apt to cause harm

risky · hazardous · perilous · unsafe · lethal

Family

unexploded, explosion, explosive, explosively, explosiveness, explode, exploded, exploder, exploding

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Used worldwide · Timeless · Everyday, not technical · Rated G