"completely coherent" is correct and usable in written English.
You can use it to emphasize that a statement or idea is easy to understand and logically connected. For example, "The author's argument was completely coherent, making it simple to follow."
However, although coherence is a relation that is descriptive of ideal thought-contents, we must not expect that coherence entails the possibility of a completely coherent world-picture being graspable by any particular human knower.
Obs: As a lawyer you're having to present a story to a jury, a simple tale that is completely coherent.
What's clear is that it's no failure not to have a completely coherent view of what has happened.
Kfir Yefet's production is completely coherent - Anthony Ward's design projects the idea of an empty home, with tiers of uninhabited bookcases - but its explicitness lowers the tension.
The team's physician, Lewis Yocum, who visited Mercker early last night, said that the pitcher was alert and completely coherent and that the bleeding had stopped.
Exhibiting astonishing dexterity, Mr. Sono shapes all this trauma into a narrative that's completely coherent and surprisingly touching, never more so than in Yu's struggle toward sexual maturity.
-- "not entirely coherent".
With access to native gates generated by three-body Hamiltonians, we can completely eliminate purely coherent overrotation errors, and for overrotation noise of 0.99 unitarity we achieve a 135-fold improvement in the logical error rate of surface-17.
Importantly, when the inhibitor was removed from the culture medium, cells completely recovered their coherent cell-cell contact nature, which suggests the full reversibility of the effect of the inhibitor (Figure 3C and S3B).
One of the features of the transitional volcaniclastic kimberlite is partially serpentinised olivines, while tuffisitic kimberlite contains completely pseudomorphed olivine and coherent kimberlite commonly contains abundant unaltered olivine (Hetman et al. 2004; Brown et al. 2008a; van Straaten et al. 2011).
The coherent whole that results is considered to show the truth more completely than would a mere collection of parts.
