Modifiers matching occasion:

• formal,
• special,
• personal,
• festive,
• elegant,
• joyous,
• happy,
• celebratory,
• outdoor,
• extraordinary,
• solemn,
• big,
• official,
• particular,
• dressy,
• important,
• exclusive,
• social,
• informal,
• sad,
• romantic,
• auspicious,
• joyful,
• musical,
• stressful,
• historical,
• crowded,
• public,
• memorable,
• serious,
• meaningful,
• wonderful,
• upcoming,
• large,
• emotional,
• single,
• significant,
• organized,
• oriental,
• major,
• unique,
• private,
• infrequent,
• unusual,
• extra,

Simple categories matching official:

• audience,
• body,
• event,
• letters,
• nature,
• ceremony,
• installation,
• announcement,
• language,
• attestation,
• price,
• documentation,
• proclamation,
• gathering,
• operation,
• space,
• item,
• reception,
• action,
• misconduct,
• act,
• institution,
• form,
• thing,
• investigation,
• ceremonial,
• structure,
• visit,
• certificate,
• circle,
• authorities,
• record,
• occasion,
• pursuit,
• restriction,
• exam,
• entity,
• agreement,
• race,
• genre,
• proceeding,
• information,
• manual,
• file,
• committee,
• status,
• document,
• certification,
• authority,
• website,
• control,
• organisation,
• organization,
• agency,
• report,
• emblem,
• message,
• note,
• material,
• process,
• source,
• outfit,
• place,
• narrative,
• fee,
• post,
• forum,
• sign,
• meeting,
• instrument,
• designation,
• text,
• business,
• expense,
• service,
• id,
• power,
• building,
• papers,
• review,
• outlet,
• celebration,
• procedure,
• publication,
• demand,
• theatre,
• statistics,
• party,
• identification,
• site,
• page,
• notice,
• establishment,
• codification,
• staff,
• unit,
• location,
• communications,
• production,
• duty,
• plan,
• arena,
• communication,
• set,
• promulgation,
• creditor,
• facility,
• paperwork,
• check,
• judgment,
• function,
• activity,
• output,
• presentation,
• assistance,
• matter,
• guidance,
• correspondence,
• group,
• work,
• use,
• position,
• holiday,
• search,
• system,
• economy,
• transcript,
• equipment,
• procession,
• effort,
• submission,
• ritual,
• commemoration,
• works,
• statement,
• clothing,
• measure,
• charge,
• opinion,