The phrase "make untenable" is grammatically correct and can be used in written English
It means to render something unable to be defended or supported, often relating to an argument or position. Example: The new evidence that was presented during the trial made the defendant's alibi untenable, leading to a guilty verdict.
The Met, he says, nonetheless tends to make untenable assumptions about the depth of visitors' knowledge.
The rest of 'em - content to audition for future Pizza Hut commercials - drove me to make untenable pledges - to boycott Nando's, to follow Wimbledon and, most importantly, never again to be seduced by the three lions, and hopeless impotent optimism.
Moreover, instead of preparing the public for the necessary concessions needed to reach an agreement, he continues to make untenable demands, such as the "right of return," which further hardens the Palestinian public's stance.
In the following year Johnson became undermaster at Market Bosworth grammar school, a position made untenable by the overbearing and boorish Sir Wolstan Dixie, who controlled appointments.
She had been living with her aunt and uncle in the South Bronx, a situation made untenable, she said, because she was frequently being raped by her cousin.
(Also, when will he release his tax returns?) Nor has he helped his credibility by making untenable claims about his role as a "job creator".
The 29-year-old released a short statement through his solicitors, saying that his position in the squad had been made "untenable and potentially divisive".
Neil Redfearn has resigned from his role as the Leeds United academy manager claiming his position had been made untenable by the club.
Clark said his position had been made untenable by May's repeated assertions that he had been at fault and her renewed allegations before the committee.
Exit International then surveyed its 2,000 Australian members to ask them what they wanted Nitschke to do next, since his position as president of the organisation had been made untenable by his decision to remain a doctor.
Meanwhile Radcliffe, feeling her position had been made untenable by a question from committee chairman Jess Norman, emphatically denied cheating in a lengthy 1,700-word 1,700-wordand turned on the statementmes and iturnederts.
