Just to clarify, the first word has 5 consonants in a row; they aren't consecutive in the alphabet. I could have been at this for many weeks if I hadn't changed another assumption I incorrectly made.
Edit: My hint was "weeks" sounding sort of like an antonym of strengths. My mistaken assumption was that Will wouldn't pick a plural as a word so I was initially focused on compound words corkscrew. Incidentally, STRENGTHS is the longest English word with just one vowel.
A: STRENGTHS --> STRENUOUS