Costliest

The costliest part of the renovation project was the installation of the new roof.

Skipping the final exam proved to be the costliest decision of his academic career.

The costliest part of his wedding was the venue rental fee.

The costliest mistake I made in my career was turning down that job offer.

The costliest mistake he made was forgetting to save his important presentation.

The costliest consequence of their reckless driving was a severe car accident.

The costliest error in the experiment led to the loss of valuable data.

Ignoring the warning signs of a failing engine proved to be the costliest oversight for the pilot.

The costliest consequence of his addiction was the deterioration of his physical and mental health.

The costliest error in the experiment resulted in the destruction of the entire laboratory.

Her procrastination resulted in the costliest missed opportunity of her career.

Eating spoiled seafood turned out to be the costliest choice he made during the vacation.

The costliest aftermath of the war was the displacement of millions of people.

The costliest repercussion of the scandal was the resignation of several high-ranking officials.

Not studying for the final exam proved to be the costliest decision he ever made.

The costliest consequence of his reckless behavior was losing all his savings.

The costliest effect of climate change is the loss of biodiversity and ecosystems.

The costliest oversight in their financial planning was not accounting for unexpected expenses.

The costliest side effect of the medication was severe allergic reactions in some patients.

The costliest outcome of the accident was the permanent disability of the driver.

Losing her passport just before the trip was the costliest mishap she had ever experienced.

The costliest part of studying medicine is the time commitment.

His attempt to climb Mount Everest was the costliest experience of his life.

Building a house in this area is the costliest investment one can make.

Losing her father was the costliest emotional experience she had ever endured.

The costliest aspect of the trip was the airfare.

The costliest consequence of procrastination is missed opportunities.

For some, the costliest price to pay is the toll it takes on their mental health.

The costliest lesson he learned was not to trust everyone he meets.

Repairing the damage from the fire was the costliest renovation they had ever undertaken.

The costliest outcome of poor leadership is a demotivated workforce.

The costliest price to pay for success is the sacrifice of personal relationships.

The costliest diamond necklace ever made was encrusted with rare pink and blue diamonds.

The space mission to Mars was the costliest and most ambitious endeavor ever undertaken by mankind.

The costliest aspect of building a house is usually the construction materials.

The latest smartphone model is the costliest one available on the market.

The team's defeat in the championship match was the costliest loss of the season.

The costliest part of organizing a wedding is usually the venue and catering.

Repairing a luxury car after an accident can be one of the costliest repairs.

The restoration of the centuries-old painting was the costliest art preservation project in the museum's history.

Implementing a new software system can be one of the costliest projects for a company.

The costliest part of running a marathon is the months of training and preparation.

The renovation of the historic mansion proved to be the costliest undertaking for the preservation society.

Hiring top-tier talent can be the costliest investment for a company, but it often yields the best results.

Building a space station is one of the costliest endeavors in human history.

The company's decision to recall the defective product proved to be the costliest mistake they had ever made.

The hurricane's impact on the coastal towns resulted in the costliest natural disaster in recent memory.

The costliest mistake in the stock market can result in significant financial losses.

The actor's extravagant lifestyle led to the costliest divorce settlement in Hollywood history.

The construction of the skyscraper was the costliest project in the city's history.