For example hazardous.
They can help you discern what foods will be pleasant, unpleasant or even harmful to you.
For harmful, damaging, injurious, detrimental, negative, hurtful, destructive. For dangerous, hazardous, perilous, unpredictable, vulnerable, treacherous
The hazard symbol is a skull with crossbones - the meaning is death.
noise
noise
I would say "unpleasant, rude, repulsive"
Stink, reek, disgusting odor, unpleasant smell
I don't think there is a synonym: forthcoming is not really a synonym as impending is generally only used of unpleasant or disastrous things about to happen.
nasty , unpleasant, disagreeable , horrid, terrible , dreadful , obnoxious
Animalistic. unpleasant, mean, awful, nasty, rotten, horrid, disagreeable
A synonym for the word vindictive is revengeful or vengeful.
mischievous, immoral, harmful, poor quality
They can help you discern what foods will be pleasant, unpleasant or even harmful to you.
Synonyms: fine, satisfactory, worthy, great, nice Antonyms: bad, unpleasant
Another word (synonym) for the word "unpleasant" that starts with an "h" is "horrific". Or at least that is what I could think of.
You would get NOXIOUS. It is an adjective. It means harmful, poisonous, or unpleasant.
Territoriality