pertinent
adj.adj. relevant or directly related to the topic you are talking about. You use this to describe information that is useful for solving a problem or answering a question.
adj. relating directly and significantly to the matter at hand. Often used in legal or formal contexts to describe evidence or arguments that have a logical connection to the issue.
The lawyer asked several pertinent questions during the trial.
Please include only the most pertinent details in your report to keep it brief and effective.
The judge ruled that the witness's previous criminal record was not pertinent to the current case and should therefore be disregarded by the jury.
Inherited from Middle English pertinent, borrowed from Old French pertinent and Latin pertinēns, pertinentem.
Typically used attributively before a noun or predicatively after a linking verb like 'be' or 'seem'. Often followed by the preposition 'to'.