That plan is too impractical, it's difficult to implement.

His plan was so unrealistic that no one could believe it.

He always has a critical attitude.

His career grew rapidly.

He knows the knack of cooking.

He gathered the wood chips and started a fire.

He set off on a journey to the north.

He cut his hair yesterday.

He maintains his health by eating liver every day.

She is a professional dresser, always wearing the latest fashion.