Mary found the psychologist's style of therapy to be very cathartic. Cathartic can be used an as adjective or a noun.
A sentence with the word cathartic that uses context clues is, crying at the sight of her lost dog returning to her yard gave cathartic release to her emotions.
A sentence for the word soliloquy that uses context clues is, She wasn't sure of herself, so she practiced her speech with soliloquy.
Context clues help you define the definition of the word.
These are called context clues.
Context clues can help you figure out the meaning of a word in a sentence or paragraph. To use context clues, you read the sentences surrounding the word that you do not know to figure out what it means.
context clues
"We need to put cathartic in this medicine."
A sentence for the word portend that uses context clues is, "The change in the wind's speed and direction portended the catastrophic hurricane that eventually struck the area."
i do my errands on time
"At the least cathartic." is not a sentence. A sentence must contain a subject (noun) and a verb. The given phrase contains neither.
I think you misunderstand context clues. They are clues within a sentence or paragraph that gives clues to the meaning of a word. Your question takes the word "healthy" out of context and what you seem to want is a definition of the word.
Using context clues.
Depending on context you could substitute cathartic with bad, corrupt, diseased, noxious, rotten, sickening, unhealthful, unhealthy.