1. Implying or favouring reaction, specially backward action.

2. One who promotes such action.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• reactionally,
• reactional,
• recationary,
• dectionary,
• reactiona,
• reationary,
• eeactionary,
• deactionary,
• feactionary,
• teactionary,
• rectionary,
• reactionnary,
• reactionarry,
• reactionaryy,
• reactionery,
• reverionary,
• fractionary,
• factinary,
• lectionnary,
• lectionarry

• reactant,
• reaction time,
• reactionism,
• reactance,
• reactionist,
• reaction.

The adjective form of the word "reactionary" is simply "reactionary".

The plural of the "reactionary" can be the "reactionaries".

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