The phrase 'a complete abandonment' is a correct and usable phrase in written English.
You can use it in any context when you want to describe a situation in which something has been given up completely or entirely, either voluntarily or involuntarily. For example: "The boss noticed the employee's complete abandonment of her duties and admonished her harshly."
That is a complete abandonment of responsibility for public transport policy by TfL.
Or was it signifying a complete abandonment of guitars in favour of becoming Skrillex 2.0?
We spend most of our lives carefully stepping around each other, but for her there's a complete abandonment of propriety.
Most migrants seem to see a foreign passport as insurance against the worst-case scenario rather than as a complete abandonment of China.
I do not favour a complete abandonment of the bill, given the changes already made and the further changes that many peers, not least crossbenchers, are pressing for and hope to get.
Welby's decision represents a complete abandonment of the strategy pursued by his immediate predecessors, Rowan Williams and George Carey, both of whom were committed to getting the liberals and conservatives to work together globally.
This overall increase was characterised by an almost complete abandonment of harvested areas for the first 8 10 months and then a rapid influx of animals after this time.
Whether this is an exercise in pushing boundaries or an experiment in the complete abandonment of a moral code, this is a shocking comic about men, women, and animals all battling and making love in a bizarre, near-empty world.
After a period of complete abandonment, it was reoccupied in the Middle Ages, but it never regained its early importance.
In particular, Austerlitz (Penguin) leaves a harrowing trail of complete abandonment, concluding in unspeakable sorrow as well as with that glimmer of hope.
Most often, these sites are not reoccupied until much later in prehistory, suggesting that the eruption may have led either to a complete or a near-complete abandonment of the affected regions or, at the very least, to a major reorganisation of landscape-use.
