You probably didn't mean simile but you meant synonym?
Agility or velocity
A simile for increase, or/and increasing could be like "A race car on a speed track." Or "A wolf hunting down prey."
I can finish my homework! (pretty slow)
A simile.
No, the sentence "He is a rocket on his bike" is not a simile; it is a metaphor. A simile explicitly uses "like" or "as" to make a comparison, while this sentence directly equates the person on the bike to a rocket, suggesting speed without using those comparative phrases.
Yes, the phrase "my brother is as fast as lightning" is a simile because it uses "as" to compare your brother's speed to that of lightning. It can also be considered a hyperbole, as it exaggerates his speed for emphasis, suggesting he is extremely fast beyond normal human capabilities.
A metaphor
As quick as a wink is a simile. ----
It is a simile.
A simile for "swift as" could be "swift as a coursing river." This comparison suggests a rapid and continuous flow of movement, emphasizing the speed and agility of the subject being described. The simile creates a vivid image in the reader's mind, highlighting the quick and seamless nature of the action or object.
The word that uses like or as is a simile. a simile is used to compare things that are alike. This is why it uses like or as in its sentence. example: The girl ran faster than a speed of lightening. The comparison in the sentence is the girl and the speed of lightening. The sentence was trying to justify that the girl ran very fast.
simile It is an example of a simile (uses like or as). A simile in itself though is a type of metaphor.
Metaphor