The phrase "always complimentary" is correct and usable in written English.
It can be used to describe a situation or behavior where someone consistently offers praise or positive remarks.
Example: "Her feedback on my work is always complimentary, which motivates me to improve further."
Alternatives: "consistently positive" or "perpetually praising".
She has, however, definite, and not always complimentary opinions of our ballet art galleries, and movies.
The result is a remarkably accurate (if not always complimentary) historical document.
Almost everybody smiles, and some even rupture the New York canon of indifference with a comment, almost always complimentary.
Many of the Climate Corporation's researchers have academic backgrounds, and some are quants, the not always complimentary name given to researchers who design models and assess risk.
Although they weren't always complimentary, to me that was secondary: what was important was that here was intelligent, detailed analysis and context.
As the library welcomed the public for the first time last week, the author's friends and family said that it belonged in Indianapolis, with which he had a complicated and not always complimentary relationship.
Edwards's characters are not always entirely complimentary about the county where they live and work.
Mr. Warren's florid pianism with its new-age frills wasn't always stylistically complimentary to Miss Tabor's oracular plainness.
Dave will be disappointed to learn that Michael hasn't always been complimentary – referring to the PM's casual dress sense, Winner once noted that he looked "like a man who should be leader of the football hooligan brigade, not leader of the nation".
O'Neal wasn't always so complimentary of him.
Most of my fans are smart, they're decent people; I know from working theaters and clubs that the staffs are always very complimentary about the people that come see to me.
