Modifiers matching outing:

• frequent,
• enjoyable,
• social,
• regular,
• planned,
• recreational,
• educational,
• expensive,
• monthly,
• communal,
• special,
• corporate,
• organized,
• urban,
• optional,
• simple,
• inexpensive,
• seasonal,
• quarterly,
• casual,
• active,

Simple categories matching frequent:

• payment,
• outing,
• condition,
• activity,
• expense,