helter-skelter vs spasmodically

helter-skelter

adv

  • In confused, disorderly haste. 

adj

  • Carelessly hurried and confused. 

noun

  • A helical fairground slide. 

  • Confusion or turmoil. 

spasmodically

adv

  • In a spasmodic manner; intermittently. 

How often have the words helter-skelter and spasmodically occurred in a corpus of books? (source: Google Ngram Viewer )