involving or requiring strenuous effort; difficult and tiring
"Landscape artists often face the arduous task of capturing the full beauty of nature."
well meaning and kindly; charitable
"The benevolent donor contributed a large sum to the orphanage."
an irregular rising and falling in number or amount; a variation
"The stock market is known for its unpredictable price fluctuations."
new methods, ideas, or products
"Technological innovations have revolutionized the way we communicate."
showing great attention to detail; very careful and precise
"The meticulous planning of the event ensured its success."
the capacity to recover quickly from difficulties; toughness
"Her resilience after the tragedy inspired everyone around her."
the occurrence and development of events by chance in a happy or beneficial way
"Finding a hundred dollar bill on the ground was pure serendipity."
not permanent; temporary
"The workers lived in transitory accommodation while the project was underway."
attractively lively and animated
"Her vivacious personality made her the life of the party."