mindmap root((微粒)) particle implies an amount of a substance or quality that is within the range of visual or mental perception: a rumor without a ~ of truth. bit suggests the least feasible amount, extent, or degree: a movie that was a ~ too violent. mite may stress either smallness in size or minuteness in amount: doesn't have a ~ of suspicion. smidgen may go even further in stressing minuteness or scarcity: left them without even a ~ of hope. whit used chiefly in negative phrases, implies the least conceivable amount: cared not a ~ about their opinion. atom suggests the very smallest size or amount possible: not an ~ of dust escaped his attention. iota, jot are used interchangeably to mean the smallest or most minute detail or amount: tried to remove the last ~ of doubt; added not a ~ to their knowledge. tittle has the same meaning as iota and jot but is usually used in the phrase jot or tittle: didn't care a ~ about the opinions of others.