Blockaders refer to individuals or groups who engage in the act of blocking or obstructing something, usually a road, a port, or an area to prevent access by others. Synonyms for blockaders include barrier creators, obstructionists, interdictors, barricaders, impeders, blockers, and hindrances. Barrier creators erect physical or metaphorical barriers to prevent access. Obstructionists deliberately block or hinder the movement of others. Interdictors prohibit or forbid access to a specific place or resource. Barricaders build barricades or barriers to block access. Impeders slow down or halt progress. Blockers obstruct or block someone or something. Hindrances cause difficulties or obstacles to progress. In summary, blockaders have synonyms that describe individuals or groups who engage in actions that impede or block access.