Modifiers matching happening:

• interesting,
• dramatic,
• local,
• internal,
• social,
• past,
• natural,
• everyday,
• climatic,
• major,
• outlandish,
• surrounding,
• unusual,
• planned,
• celestial,
• unexpected,
• strange,
• unforeseen,
• distant,
• evil,
• schoolwide,
• unpleasant,
• technological,
• cool,
• cultural,
• rural,
• underwater,
• abnormal,
• terrible,
• nasty,
• organized,
• firm,
• significant,
• familiar,
• unfortunate,
• serious,
• extraordinary,
• sporting,
• special,
• exceptional,
• untoward,
• paranormal,
• common,
• traumatic,
• public,
• exciting,
• current,
• unwanted,
• astronomical,
• congregational,
• disastrous,
• global,
• mental,
• corporate,
• smaller,
• pleasant,
• national,
• ordinary,
• horrible,
• historical,
• informal,
• covered,
• seasonal,
• contemporary,
• important,

Simple categories matching unpleasant:

• symptom,
• consequence,
• feelings,
• emotion,
• object,
• substance,
• complication,
• insect,
• odour,
• state,
• stimulus,
• specimen,
• event,
• thing,
• taste,
• task,
• reality,
• weather,
• cognition,
• condition,
• mood,
• job,
• treatment,
• change,
• feeling,
• fact,
• compound,
• person,
• incident,
• image,
• nature,
• reaction,
• behaviour,
• behavior,
• sensation,
• odor,
• discomfort,
• problem,
• contingency,
• happening,
• attitude,
• trait,
• fate,
• creature,
• truth,
• action,
• work,
• touch,
• flavour,
• eventuality,
• occurrence,
• activity,
• flavor,
• procedure,
• situation,
• contaminant,
• issue,
• experience,