Modifiers matching cost:

• fixed,
• commercial,
• administrative,
• reasonable,
• unusual,
• external,
• additional,
• incidental,
• soft,
• direct,
• basic,
• routine,
• miscellaneous,
• actual,
• secondary,
• hidden,
• immediate,
• variable,
• large,
• overhead,
• internal,
• single,
• major,
• real,
• indirect,
• marginal,
• future,
• environmental,
• operational,
• significant,
• necessary,

Simple categories matching reasonable:

• period,
• disbursement,
• control,
• measure,
• expense,
• cost,
• means,
• information,
• charge,
• policy,
• cause,
• terms,