adverse (part of speech: adjective)
disastrous, unlucky, burdensome, hard, grievous, unfortunate, difficult, calamitous, unfavorable, adverse, tragic, inauspicious, opposing, antipathetic, woeful, unpropitious, troublesome, untoward, miserable, detrimental, catastrophic, unfriendly, distressful
dangerous (part of speech: adjective)
- To be astray in a wilderness of any kind is a perilous predicament for the traveller- in one without water it is death. - "The Lone Ranche", Captain Mayne Reid.
- The battle has been perilous. - "Charles Lamb", Barry Cornwall.
- You have heard my story, Jasper Pennington, he said- heard how I struck my wife when she was in a perilous condition. - "The Birthright", Joseph Hocking.