Modifiers matching stimulation:

• active,
• sensory,
• mechanical,
• physical,
• sexual,
• noxious,
• intellectual,
• electrical,
• intense,
• auditory,
• sympathetic,
• outside,
• chronic,
• regular,
• mental,
• aversive,
• internal,
• environmental,
• emotional,
• light,
• external,
• antigenic,

Simple categories matching intellectual:

• ability,
• attribute,
• tradition,
• subject,
• discipline,
• nihilism,
• game,
• exchange,
• faculty,
• possession,
• activity,
• process,
• technique,
• achievement,
• endeavour,
• project,
• processing,
• capacity,
• gathering,
• topic,
• issue,
• movement,
• journal,
• works,
• production,
• facility,
• history,
• involvement,
• skill,
• field,
• music,
• profession,
• form,
• unit,
• forum,
• affection,
• service,
• capital,
• integrity,
• heritage,
• inquiry,
• function,
• property,
• institution,
• attainment,
• state,
• vocation,
• content,
• domain,
• notion,
• competition,
• force,
• crime,
• culture,
• document,
• knowledge,
• information,
• area,
• system,
• brain,
• science,
• organization,
• attitude,
• study,
• effort,
• life,
• entity,
• measure,
• quality,
• power,
• task,
• group,
• capability,
• change,
• program,
• practice,
• operation,
• material,
• growth,
• assistance,
• assets,
• interest,
• stimulation,
• behavior,
• performance,
• religion,
• event,
• philosophy,
• control,
• right,
• mechanism,
• thought,
• product,
• language,
• work,
• thing,
• output,
• disability,
• arts,
• woman,
• virtue,
• endeavor,
• trait,
• debate,
• characteristic,
• nature,
• creation,
• structure,
• values,