Here's a breakdown:
* Satirical: The story pokes fun at the pretentiousness and arrogance of the character Mr. Kelada, who believes he knows everything about everything. Maugham uses irony and exaggeration to highlight the absurdity of his self-proclaimed expertise.
* Humorous: The story is filled with witty observations, amusing situations, and comical dialogue, especially between Mr. Kelada and the narrator. The reader is invited to chuckle at Mr. Kelada's antics and the reactions of those around him.
* Cynical: There is an underlying cynicism in the story, particularly regarding human nature and the tendency for people to be judgmental and quick to assume the worst about others. The narrator's own prejudice against Mr. Kelada exemplifies this, and the story ultimately suggests that even the most seemingly knowledgeable person can be wrong.
Overall, the tone of "Mr. Know-All" is one of amused detachment and ironic observation. Maugham uses humor to expose the flaws in human behavior, particularly the vanity and self-importance that can lead to ridiculous outcomes.