harder
Definitions
More solid, firm, or resistant to pressure than something else.
Requiring more effort, skill, or endurance to accomplish or understand.
More severe, intense, or strenuous in nature.
Examples
You need to work much harder if you want to achieve your goals.
The test was significantly harder than I had originally anticipated.
Synonyms
more difficult more challenging more strenuous more arduous more demanding more rigorous more taxing
Antonyms
easier simpler less difficult more effortless less challenging softer more manageable