Unrelenting or unyielding in severity.
Unremitting, steady and persistent.
Erratic or unsustained.
Convulsive; consisting of spasms.
Intermittent or fitful; occurring in abrupt bursts.
Of or relating to a spasm; resembling a sudden contraction of the muscles.
Of or relating to the spasmodic poets, a group of British Victorian poets who wrote introspective drama in verse.
A medicine for suppressing spasms.