momentful adjective 2noun 1forms 4 adjective2 •Relating to or characteristic of a momentOur unit mite of care and trivialness, And frozen staidness and frigidity; On what shall quickly prove a confluence Of bosom ferment; yea, rack'd seas of thought, A universe of momentful concern. — 1829 •Synonym of momentous.Take that momentful night when WMAL-TV made its baptism into the ether. — 1948 noun1 •As much as can be experienced in a moment.Yes, I am spoon and spool, milk and needle harvesting quiet by the momentful. — 2001 formsmomentfuls · momentsful · more momentful · most momentful