spurtive
/ˈspɜːrtɪv/Definitions
1. adjective
characterized by or given to sudden, brief, and energetic bursts of activity, action, or feeling.
“The spurtive enthusiasm of the young activists helped to energize the protest movement.”
2. noun
a sudden, brief, and energetic burst of activity, action, or feeling.
“The spurtive outburst of applause from the audience surprised the performers.”