Antonyms of adj seismic

1 sense of seismic

Sense 1
seismic, seismal -- (subject to or caused by an earthquake or earth vibration)

INDIRECT (VIA unstable) -> stable -- (resistant to change of position or condition; "a stable ladder"; "a stable peace"; "a stable relationship"; "stable prices")

Similarity of adj seismic

1 sense of seismic

Sense 1
seismic, seismal -- (subject to or caused by an earthquake or earth vibration)
       => unstable (vs. stable) -- (lacking stability or fixity or firmness; "unstable political conditions"; "the tower proved to be unstable in the high wind"; "an unstable world economy")