"respectable approach" is correct and usable in written English.
You can use it to refer to an approach that is considered professional and admirable. For example, "The politician had a very respectable approach when responding to questions from the press."
A methodologically respectable approach to big data is essential, as it can tell us many useful things.
The respectable approach, reflecting current trends in academic research, that won rave reviews for Helen Langdon's 1998 biography, Caravaggio, is no more convincing.
But many students think making sacrifices and working hard is a more respectable approach than e-begging.
Adults tend to relate to each other better than they relate to teenagers, so if two respectable adults approach your parents and defend your relationship, offering their assurances about their son in the process, your parents might be willing to take this new evidence into careful consideration.
She succeeded in territory her father never explored: she has moved from confrontational politics to a more respectable, proposal-oriented approach.
He told the audience he had recently visited Athens and had been watching a crowd enter the opera, marvelling at how cultural life continued as political storm clouds gathered, when a respectable elderly woman approached him.
The TFTs with shortest channels exhibit on-current and transconductance as high as ~30 μA μm−1 and ~4.5 μS μm−1, respectively, which is respectable performance for a solution-processed approach.
That is certainly a respectable, perhaps even inarguable approach, but it requires orchestral playing with some vibrancy and zest.
In the middle of the field is "The Sum of All Fears" from Paramount Pictures, approaching a respectable but not spectacular $100 million after four weeks.
Then, when it became clear that he would not use this right and some deals were signed, many Iranians considered them too generous to the oil companies.The value of foreign deals signed to date now approaches a respectable $15 billion.
His goal is not so much to persuade his listeners that he is right as it is to assure them that his approach is intellectually respectable.
