• activirty,
• activisim,
• activests,
• acrivist,
• activitist,
• activise,
• activiity,
• actiist,
• activies,
• activitu,
• activiate,
• activst,
• activinty,
• activits,
• activiyt,
• activitsts,
• actavism,
• activiti,
• activitty,
• activsts

• acidify,
• acid-fast,
• activeness,
• activate,
• activating,
• actifed,
• actively,
• active,
• activistic,
• activase,
• activism,
• activator,
• active site,
• activated,
• activation,
• activity.

The adjective form of the word "activist" is "activistic".

The plural of the "activist" can be the "activists".

The singular of the "activist" can be the "activist".