Definition of uncle

Short definition: The word uncle means the brother of your father or mother, or the husband of your aunt. People also use it to refer warmly to an older man who feels close to the family, even if he is not related by blood.

Looking for a clear and natural explanation of the word uncle? The word uncle is usually connected with family, but it often carries warm feelings beyond simple relationships. For many people, an uncle can be a fun storyteller, a helper in tough times, or someone who feels a little more relaxed than parents. In everyday life, uncle is not just a family title, but also a symbol of support, guidance, and friendly advice. Below, each meaning is explained in a relaxed and natural way, with explanations that sound human instead of stiff like a textbook.

Noun forms: uncle, uncles
Related: aunt n., nephew n., niece n.
Syllable: un-cle

1. The brother of your father or mother.

   In its most direct meaning, an uncle is your parent’s brother. He is part of your extended family and often plays a special role— not as close as a parent, but closer than many other relatives. For many children, an uncle is someone who feels safe to talk to, especially when they want advice from an adult who feels less strict.

   My uncle always tells funny stories about his childhood, and everyone gathers around him during family dinners.
   She called her uncle when she needed advice, because he always listens without judging.
   Growing up, his uncle taught him how to fix bicycles, turning small lessons into happy memories.

   Synonyms: father’s brother, mother’s brother, family uncle, close male relative, elder male relative, family member, kin, relative, parent’s sibling, family guardian, trusted elder, family guide
   Antonyms: stranger, unrelated person, outsider, unknown man, non-relative, distant person, unrelated adult, unfamiliar face, foreigner, outsider only, unrelated elder, unknown relative

2. The husband of your aunt.

   An uncle can also be someone who joins the family through marriage. Even without blood connection, this kind of uncle often becomes just as important in family life. Over time, relationships grow naturally, and many people forget that he was not related by birth at all.

   Her uncle married into the family, but everyone treats him like he has always belonged there.
   At every holiday dinner, her uncle helps in the kitchen, making the whole day feel warmer and more relaxed.
   Even though he is her aunt’s husband, she proudly introduces him as her uncle.

   Synonyms: aunt’s husband, family by marriage, in-law uncle, married uncle, extended family member, family relative, family addition, connected relative, family man, household member, family supporter, related by marriage
   Antonyms: stranger by marriage, unrelated in-law, distant person, outsider, non-family member, unknown man, unconnected person, foreigner to the family, outsider only, unrelated adult, distant in-law, unfamiliar person

3. A friendly title used for older men, especially by children.

   In many cultures, uncle is also used as a respectful and friendly way to address older men. It does not always mean real family, but it shows warmth, trust, and closeness.

   The kids in the neighborhood call him uncle, even though he is not related to them at all.
   She greeted the shop owner as uncle, showing respect and friendliness at the same time.
   Everyone calls him uncle, because he always looks after the children in the area.

   Synonyms: friendly elder, respected man, community uncle, kind older man, neighborhood uncle, elder friend, respected figure, friendly adult, caring elder, trusted man, warm elder, familiar elder
   Antonyms: stranger, unknown man, distant adult, unfriendly person, outsider, unfamiliar elder, cold figure, distant person, unknown adult, rude man, unfriendly elder, unknown figure

4. A man who acts like family, even without real ties.

   Sometimes uncle describes a role rather than a relationship. It can mean a man who supports, guides, and cares for someone like family would. In this sense, the word shows emotional connection, not just biological ties.

   His best friend’s father became like an uncle to him, always giving advice and encouragement.
   She says her coach feels like an uncle, because he always looks out for her.
   Over the years, he turned into an uncle figure for many of the younger workers in the office.

   Synonyms: father figure, mentor, family-like supporter, caring guide, trusted adult, protector, role model, supportive elder, family friend, guardian figure, emotional uncle, caring man
   Antonyms: stranger, uncaring adult, distant person, unsupportive figure, cold mentor, indifferent man, unhelpful elder, disconnected adult, unfriendly guide, distant role model, careless person, uncaring figure

5. A word that represents warmth and family connection.

   Beyond its definition, uncle often carries emotional meaning. It represents someone who feels close, but without the pressure of being a parent. For many people, an uncle is someone who brings laughter, comfort, and a sense of belonging.

   Visiting her uncle always makes her feel relaxed, because his house feels like a second home.
   He says his uncle taught him more about life than anyone else outside his parents.
   For the children, their unccle is the one who brings surprises, jokes, and happiness to every family gathering.

   Synonyms: warm relative, caring family member, friendly elder, loved one, trusted family figure, supportive relative, emotional support, close family man, beloved uncle, caring presence, family anchor, gentle guide
   Antonyms: cold relative, distant family member, uncaring elder, disliked person, unfriendly figure, emotional distance, ignored relative, forgotten family member, unimportant person, cold presence, distant connection, broken bond