The phrase "make unavailable" is grammatically correct and can be used in written English.
It means to prevent or hinder something from being accessible or obtainable. You can use it when talking about limiting someone's access to something or preventing an item from being used or obtained. Example: The library made the new book unavailable for borrowing until the damaged pages were repaired. The company's decision to make their products unavailable for purchase online caused a decrease in sales. The severe weather conditions have made the road completely unavailable for travel.
In a speech delivered from the City Hall steps -- steps he would later make unavailable to the general public -- he set out a clear agenda.
Hello and good afternoon, I just thought you might find it interesting that on the day after one of their biggest product releases Apple has decided to make unavailable their entire technical support department.
The Act states that it is "unlawful to refuse to sell or rent... or to refuse to negotiate for the sale or rental of, or otherwise make unavailable or deny, a dwelling to any person because of race, color, religion, sex, familial status, or national origin".
And then there were the players made unavailable by their clubs: 36 of them.
In April 2013, legal aid was made unavailable for prisoners to challenge their treatment in prison, including those with disabilities.
They sequester the space that is therefore made unavailable to other organisms, thus having a profound impact on community structure.
And Mr. Brown would face an interesting creative challenge if the phrases "What the hell...?," "Who the hell... ?" and "Why the hell... ?" were made unavailable to him.
Skype was one of the high-profile services made unavailable for some users who were unable to log in during the one-hour 40-minute intermittent outage.
Three weeks before the Biennale, that boat was made unavailable and the team, which now included local engineers and producers, scrambled to find another.
It would stipulate that some categories of food be made unavailable on some days and that vending machines should dispense only healthy products.
Some of the most desirable ones have been made unavailable: Jack Welch, the boss of GE, has made it a rule that his senior managers cannot sit on the boards of other companies.
