1. The brother of one's father or mother. Uncle Sam, a humorous impersonation of the government or the people of the United States, being a rendering of the initial letters U.S.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• kunkle,
• unrole,
• unckle,
• unclude,
• auncle,
• pencle,
• oncle,
• aunble,
• uncl,
• unlce,
• uncls,
• sincle,
• pincle,
• sungle,
• uncel,
• intle,
• untl,
• unplu,
• ungue,
• uncul

• unclean,
• unclip,
• unequal,
• uncoiled,
• unclothe,
• unclasp,
• unsoiled,
• Unsling,
• unclog,
• uncool,
• unglazed,
• unsloped,
• unclad,
• uncloak,
• unclear,
• uncoil,
• uncial,
• unseal,
• ungual.

The adjective form of the word "uncle" is "uncle-like".

The plural of the "uncle" can be the "uncles".

The singular of the "uncle" can be the "uncle".