odourlessness
Absence of scent
Odourlessness is the quality of having no smell.
The word appears most often in technical or commercial contexts describing substances that leave no scent: The odourlessness of the gas made the leak undetectable.
This is the British spelling; Americans write odorlessness.
Having no added smell
- fragrance-freeWithout added smell
- scentlessWithout any aroma
- unperfumedHaving no added fragrance
- smell-freeEmitting no odor
nondescript · bland · flat · characterless · featureless
Free from microorganisms
- asepticFree from pathogens
- antisepticMicrobe-killing substance
- sanitizedCleansed of contaminants
- disinfectedFreed from harmful microorganisms
germ-free · hygienic · purified · decontaminated · surgical · clinical · hospital · laboratory
Impossible to notice
- imperceptibleCannot be sensed
- unnoticeableNot readily perceived
- faintWeak and indistinct
- subtleNot immediately obvious
indistinct · elusive · trace · minimal · negligible · subliminal · below-threshold · unperceived
Free of soil
- pureUnmixed, without impurities
- freshNewly made, not stale
- pristinePure and untouched
- immaculateCompletely without blemish
spotless · unblemished · untainted · unadulterated · refined · distilled · filtered · purified
unscented
Having no added smell
- fragrance-freeWithout added smell
- scentlessWithout any aroma
- unperfumedHaving no added fragrance
smell-free · nondescript · bland · flat · characterless · featureless
sterile
Free from microorganisms
- asepticFree from pathogens
- antisepticMicrobe-killing substance
- sanitizedCleansed of contaminants
disinfected · germ-free · hygienic · purified · decontaminated · surgical · clinical · hospital · laboratory · pharmaceutical
undetectable
Impossible to notice
- imperceptibleCannot be sensed
- unnoticeableNot readily perceived
- faintWeak and indistinct
subtle · indistinct · elusive · trace · minimal · negligible · subliminal · below-threshold · unperceived · indiscernible
anosmia
Total olfactory loss
- noseblindHabituated to a smell
clean
Free of soil
immaculate · spotless · unblemished · untainted · unadulterated · refined · distilled · filtered · purified · crisp
nonreactive
Chemically inactive substance
- stableSecure and unchanging
- neutralNot favoring any side
- unreactiveNot prone to reactions
passive · nitrogen · argon · helium · nontoxic · nonvolatile · inactive · dormant
odourlessnessodorousness
Quality of having scent
smelliness · odour · smell · pungency · fragrance
odourless, odour, odours, odoured, odorous, odorless, odorlessness, odor, odors