Answer:

tensely

Answer	Crossword Clue
TENSELY	In an uptight way
TENSELY	"I'm having trouble conjugating this verb," Tom said ...
TENSELY	In an unrelaxed manner

TENSELY	How cliff-hangers end
TENSELY	With angst
TENSELY	In a nervous way
TENSELY	Not slack
TENSELY	With great nervousness.
TENSELY	Without relaxing.
TENSELY	Not without strain.
TENSELY	In a strained manner

TENSELY	One way to be wound