Similar meaning:
* Difficult: This is the most direct synonym, emphasizing the hardship of the task.
* Demanding: This implies a high level of effort or skill needed.
* Tough: This is a more informal synonym, often used for physical tasks.
* Rigorous: This suggests a strict and thorough approach.
* Strenuous: This is similar to "rigorous" but emphasizes physical exertion.
* Intense: This conveys a high level of effort or focus.
* Trying: This emphasizes the mental or emotional effort involved.
Positive connotations:
* Stimulating: This suggests the task is intellectually engaging and exciting.
* Engaging: This emphasizes the task's ability to capture interest and attention.
* Invigorating: This implies the task is energizing and refreshing.
* Rewarding: This highlights the positive outcome or satisfaction gained from completing the task.
* Meaningful: This implies the task has a significant purpose or value.
Negative connotations:
* Overwhelming: This suggests the task is too much to handle.
* Daunting: This emphasizes the task's intimidating nature.
* Burdensome: This implies the task is a heavy and unpleasant responsibility.
Formal alternatives:
* Taxing: This is a more formal way of saying "demanding."
* Arduous: This is a formal synonym for "difficult."
* Herculean: This implies the task is extremely difficult and requires great effort.
Ultimately, the best word to use depends on the specific situation and the desired effect.