The phrase "a considerable complexity" is correct and usable in written English.
It can be used when discussing something that has a significant level of intricacy or difficulty.
Example: "The project involves a considerable complexity that requires careful planning and execution."
Alternatives: "a significant complexity" or "a substantial complexity".
Our study highlights a considerable complexity and molecular plasticity in the architecture of the MJ.
The continuously growing integration of mechanics, electronics, and informatics into modern products introduces a considerable complexity into product development activities.
Although a considerable complexity for its genetic architecture was suspected, there were some challenges to identify false negative associations that resulted from the GWAS.
The increasing demand on functionalities in new home and building automation systems leads to a considerable complexity increase both in the development as well as in the operation and maintenance of these systems.
However, a considerable complexity reduction can be observed from Figures 4, 5, 6, and 7.
The solution proposed in [7], which is a minimum mean square error (MMSE) form of channel inversion, provides some performance and capacity gains with respect to the conventional CI, without a considerable complexity increase.
But inside, like Willowdell, it is a work of considerable complexity, with a brick and granite arcade.
Pain is considered both a sensation and an emotion, showing considerable complexity and subjectivity.
The result is extraordinary: a smoky but moist halibut filet in a broth of considerable complexity.
For someone so celebrated for his simplicity, Jorge Mario Bergoglio turns out to be a man of considerable complexity.
The uniting of the major ganglionic centres of the central nervous system constitutes a brain of considerable complexity.
