Here are some possible explanations and alternatives:
* Misspelling: It may be a misspelling of "solicitous," which is a word meaning anxious or concerned.
* Modern Usage: The word "solicious" might be a modern invention or a variation on a more established word.
* Regional Dialect: There's a chance it might be a word from a specific region or dialect of English.
If you can provide more context, I might be able to give you a more accurate answer. For example, where did you see the word used? What was the sentence or phrase?