Context clues

"The Jackson's majestic new house was even grander than their old one". What does majestic mean?

"I couldn't see through the dingy window because it was so dirty". What does "dingy" mean?

"The weatherman said that a behemoth, powerful storm is approaching our area". What does "behemoth" mean?

"The crowd of people began to dwindle, or get smaller at 7:00". What does "dwindle" mean?

"The feeble man was so weak that he could barely walk." What does "feeble" mean?