mo·men·tous 
(mō-mĕntəs)
(mō-mĕntəs)adj.
Of utmost importance; of outstanding significance or consequence: a momentous occasion; a momentous decision.
mo·mentous·ly adv.
mo·mentous·ness n.
- cut off one's nose to spite one's face
- cut (one's) losses
- cut one's losses
- cut (one's) teeth on
- cut one's teeth on
- cut out
- cutout
- cutover
- cutpurse
- cut-rate
- cut short
- cut (someone) down to size
- cut someone down to size
- cut someone some slack
- cut some slack
- cuttable
- Cuttack
- cut teeth on
- cutter
- cut the cheese
- cut the mustard
- cutthroat
- cutthroat trout
- cut time
- cutting