The term 'vertiginous' is an adjective used to describe something that is characterized by a sensation of dizziness or a feeling of being unsteady. The crossword solutions for this term are 'TURNING' (7 letters), 'ROTARY' (6 letters), 'DIZZY' (5 letters), 'STEEP' (5 letters), 'SHEER' (5 letters), and 'WOOZY' (5 letters). All of these words can be used to describe the sensation of vertigo, which is a feeling of disorientation or dizziness caused by looking down from a great height or spinning around in circles. The words 'TURNING, ' 'ROTARY, ' and 'DIZZY' all refer to the physical motion associated with vertigo, while 'STEEP, ' 'SHEER, ' and 'WOOZY' all refer to the sensation of dizziness or unsteadiness that is often experienced when one is affected by vertigo.