Modifiers matching passion:

• dark,
• transient,
• evil,
• private,
• violent,
• individual,
• intense,
• undesirable,
• positive,
• excited,
• antisocial,
• useful,
• sinful,
• natural,
• negative,
• extreme,
• timeless,
• strong,
• stronger,
• healthy,
• serious,
• humanlike,
• internal,
• ordinary,
• universal,
• social,
• destructive,
• moral,
• basic,
• male,
• untoward,
• reactive,
• irrational,
• complex,
• emotional,
• major,
• active,
• ugly,
• powerful,
• emotive,
• important,
• secondary,
• repressed,

Simple categories matching undesirable:

• item,
• component,
• activity,
• adaptation,
• behavior,
• emotion,
• trait,
• propensity,
• area,
• situation,
• layer,
• constituent,
• outcome,
• substance,
• attribute,
• sediment,
• bird,
• microorganism,
• behaviour,
• occurrence,
• motive,
• consequence,
• animal,
• trouble,
• characteristic,
• precipitate,
• nutrient,
• material,
• agent,
• residue,
• pollutant,
• event,
• rodent,
• metabolite,
• mail,
• motion,
• matter,
• fluid,
• plant,
• thought,
• software,
• reaction,
• filler,
• character,
• communication,
• code,
• incident,
• zone,
• adduct,
• defect,
• passion,
• ingredient,
• gas,
• scene,
• vegetation,
• sector,
• facility,
• vermin,
• quality,
• volatile,
• experience,
• surface,
• content,
• location,
• formation,
• object,
• property,
• chemical,
• action,
• route,
• part,
• flora,
• organism,
• pathogen,
• product,
• bug,
• compound,
• status,
• waste,
• process,
• feature,
• growth,
• phase,
• artifact,
• phenomenon,
• use,
• creature,
• state,
• deposit,
• industry,
• sensation,
• taste,
• stabilizer,
• symptom,
• result,
• change,
• mineral,
• noise,
• metal,
• particle,
• odour,
• condition,
• contaminant,
• website,
• bacteria,
• light,
• cell,
• lie,
• email,
• elements,
• alteration,
• flaw,
• fauna,
• thing,
• solid,
• complication,
• mammal,
• pest,
• microbe,
• lipid,
• angle,
• cause,
• pattern,
• conduct,
• mutation,
• algae,
• weather,
• practice,
• cation,