Based on the clue 'adjective meaning unforgiving or vengeful', what is the answer?

Based on the clue 'adjective meaning so awe inspiringly beautiful as ...', what is the answer? Based on the clue 'adjective meaning sudden or unexpected such as whe...', what is the answer? Based on the clue 'adjective meaning suitable for sacrifice in the in...', what is the answer? Based on the clue 'adjective meaning tediously repetitive or repetiti...', what is the answer? What is referred to by 'adjective often preceding daiquiri'? What is associated with: adjective preceding the railroad completed in 1869? Based on the clue 'adjective that describes a chemical such as lye th...', what is the answer? Based on the clue 'adjective that means an inferior artificial subst...', what is the answer?