The most common and most likely answer to this crossword clue is the 4 letter word TYPE
I've seen this crossword clue in The Sunday Telegraph
T
Y
P
E
More clues leading to the result TYPE
- Pernickety person — kind inside
- Class write using keyboard
- Kind daughter had an office job maybe
- Sort to get words on to paper?
- Sort found in sleepy towns all over
- Kind teacher, your perfect educator initially
- Use keys to enter property, perhaps
- Class of thirty cleared out before tiring lesson
- Eighty percent included? That’s kind
- Guilty person, at heart, is kind
Buddy explains!
The straight part
We know that "Key/model" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case key/model = type.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TYPE mean?
TYPE noun- A grouping based on shared characteristics; a class.
- An individual considered typical of its class, one regarded as typifying a certain profession, environment, etc.
- An individual that represents the ideal for its class; an embodiment.
- A letter or character used for printing, historically a cast or engraved block.
- Something, often a specimen, selected as an objective anchor to connect a scientific name to a taxon; this need not be representative or typical.
- Preferred sort of person; sort of person that one is attracted to.
- A blood group.
- (corpus linguistics) A word that occurs in a text or corpus irrespective of how many times it occurs, as opposed to a token.
- An event or person that prefigures or foreshadows a later event - commonly an Old Testament event linked to Christian times.
- A tag attached to variables and values used in determining which kinds of value can be used in which situations; a data type.
- The original object, or class of objects, scene, face, or conception, which becomes the subject of a copy; especially, the design on the face of a medal or a coin.
- A simple compound, used as a mode or pattern to which other compounds are conveniently regarded as being related, and from which they may be actually or theoretically derived.
- A part of the partition of the object domain of a logical theory (which due to the existence of such partition, would be called a typed theory). (Note: this corresponds to the notion of "data type" in computing theory.)
- To put text on paper using a typewriter.
- To enter text or commands into a computer using a keyboard.
- To determine the blood type of.
- To represent by a type, model, or symbol beforehand; to prefigure.
- To furnish an expression or copy of; to represent; to typify.
- To categorize into types.