A guarded person

(gɑːʳdɪd ) adjective. If you describe someone as guarded, you mean that they are careful not to show their feelings or give away information.
GUARDED definition and meaning | Collins English Dictionary: click

Why Being Guarded Isn’t Such a Bad Thing
Psych Central: https://psychcentral.com/blog/why-being-guarded-isnt-such-a-bad-thing
May 31, 2018 — If you’re guarded, you’re not just damaged or broken or intense. You understand that people are not to be trusted without earning it. You get …

Do You Have A Guarded Heart?
HuffPost: https://www.huffpost.com/entry/do-you-have-a-guarded-hea_b_10795864
Jul 5, 2016 — Individuals who have a guarded heart do not trust quickly or easily – they’ve learned that when you show those deepest parts of yourself to …

Character Trait: Guarded.
ProWritingAid: https://prowritingaid.com/character-traits/guarded
Dec 6, 2023 — The character trait “guarded” refers to a personality that is cautious, reserved, and hesitant to reveal their thoughts or feelings to others.

The Art of the Guarded Heart
The Good Men Project: https://goodmenproject.com/featured-content/the-art-of-the-guarded-heart-wcz/
Aug 9, 2018 — A person with a very guarded heart is someone with a permanently rigid, defensive or aggressive kamae. They are able to keep the attack out, and …

The Guarded Personality and Its 6 Hidden Powers
Learning Mind: https://www.learning-mind.com/guarded-personality-powers/
Apr 24, 2020 — A person with a guarded personality struggles with showing their affection to other people. Being guarded comes with certain struggles but …

5 Warning Signs You’re Too Guarded
Mad About Marriage: https://madaboutmarriage.com/2023/05/05/5-warning-signs-youre-too-guarded/
May 5, 2023 — Guarded, distrusting people tend to shun commitment. They might feel their partner is being pushy when asking for a commitment. We should be …