tension (n.)
- agitation
- angst
- anxiety
- anxiousness
- apprehension
- apprehensiveness
- bloat
- care
- chill
- chilliness
- clash
- clutch
- coldness
- concern
- conflict
- contention
- coolness
- crisis
- crunch
- discomfort
- discord
- discordance
- disharmony
- disquiet
- disquietude
- distension
- distress
- disturbance
- dread
- edginess
- elongation
- emergency
- enmity
- exigency
- extension
- fear
- fidgetiness
- firmness
- force
- foreboding
- friction
- frost
- haul
- heave
- iciness
- imperativeness
- incompatibility
- inflation
- inharmoniousness
- inhospitality
- inquietude
- jangle
- jar
- jitteriness
- jumpiness
- lengthening
- malaise
- mischief
- misgiving
- nerves
- nervousness
- overanxiety
- overexertion
- overstrain
- perturbation
- pinch
- press
- pressure
- production
- prolongation
- protraction
- pucker
- pull
- rack
- rigidity
- rigidness
- rigor
- rub
- solicitude
- stew
- stiffness
- strain
- straining
- stress
- stressfulness
- stretch
- stretching
- suspense
- swelling
- tautness
- tenseness
- tensity
- tightness
- traction
- trouble
- tug
- unease
- uneasiness
- unfriendliness
- unpleasantness
- unsociability
- upset
- urgency
- vexation
- worry
- zeal
