Incorrect spelling, explanation: the phrase to small does not have a standard meaning or definition in English. As you may know, to is a preposition with various meanings, and small is an adjective describing size. When used together as to small, it does not form a valid expression with a clear or established interpretation. In standard English, the correct and commonly accepted phrase to convey the idea of something being smaller than desired or appropriate is too small, using too as an adverb. For clarity and correctness, it’s recommended to use too small when describing something of inadequate size or extent.

Correct spelling, explanation: the phrase too small is used to indicate that something is of insufficient size or dimensions for a particular purpose or requirement. It suggests that the object or item being referred to does not meet the desired or expected size criteria. When referring to the physical dimensions of an object, too small means it is not large enough to serve its intended function effectively. For example, if you’re buying clothes and the shirt is too small, it means it won’t fit you properly. You can’t spell it as to small, because that would be a mistake.

Definition of too small:
phrase, meaning something is not big enough or is inadequate in size
The shoes I ordered online were too small, and my toes felt cramped when I tried to walk in them.
The conference room was too small to accommodate all the attendees, forcing us to find an alternative space for the meeting.

Collocations with too small:
Some most commonly used collocations include:
1. Too small to see: this collocation is often used metaphorically to describe something that is not easily noticeable or significant.
The impact of the policy change was too small to see immediately, but it became evident over time.
2. Too small an amount: this collocation emphasizes the smallness of a quantity.
The donation was appreciated, but it was too small an amount to make a significant difference.
3. Too small a space: this collocation is used to describe an area that is insufficient in size to accommodate something comfortably.
The kitchen was too small a space to fit all the necessary appliances.
4. Too small in comparison to: this collocation is used when comparing the size of one thing to another, highlighting the significant difference in size.
The small local store was too small in comparison to the large supermarket across the street.