What do you call someone who pretends to be something they are not? I was thinking "pretentious" but I looked up pretentious in the Merriam dictionary and think it's too strong. I want a milder term. Something that does not connote arrogance.
1.) self-consciously trying to present an appearance of grandeur or importance
2.) having a feeling of superiority that shows itself in an overbearing attitude
(https://www.merriam-webster.com/thesaurus/pretentious)
p.s. it doesn't have to be a single word really