fanfarrón
braggart
fanfare
a showy display
+
-ón
augmentative suffix
Fanfarrón means braggart and can be thought of as someone who makes a big fanfare0 (showy display0) about themselves, with -ón1 indicating an intensification1 of this quality.
noun
- braggartA person who boasts excessively; a braggart or show-off.No le hagas caso, es un fanfarrón que siempre exagera sus logros. // Don't pay attention to him, he's a braggart who always exaggerates his achievements.
adjective
- boastfulBoastful or bragging.Su actitud fanfarrona molestaba a todos. // His boastful attitude annoyed everyone.