adviser
noun
[ ədˈvʌɪzə ]
• a person who gives advice in a particular field.
Similar:
counsellor,
mentor,
guide,
consultant,
consultee,
confidant,
confidante,
right hand man,
right hand woman,
aide,
helper,
instructor,
coach,
trainer,
teacher,
tutor,
guru,
consigliere,
main man,
Dutch uncle,