301193373 of the military or industry; using (or being) the heaviest and most powerful armaments or weapons or equipment; "heavy artillery"; "heavy infantry"; "a heavy cruiser"; "heavy guns"; "heavy industry involves large-scale production of basic products (such as steel) used by other industries".
301190683 unusually great in degree or quantity or number; "heavy taxes"; "a heavy fine"; "heavy casualties"; "heavy losses"; "heavy rain"; "heavy traffic".
301192786 slow and laborious because of weight; "the heavy tread of tired troops"; "moved with a lumbering sag-bellied trot"; "ponderous prehistoric beasts"; "a ponderous yawn".
300836544 characterized by effort to the point of exhaustion; especially physical effort; "worked their arduous way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a punishing pace".
301188762 marked by great psychological weight; weighted down especially with sadness or troubles or weariness; "a heavy heart"; "a heavy schedule"; "heavy news"; "a heavy silence"; "heavy eyelids".
301278423 of great gravity or crucial import; requiring serious thought; "grave responsibilities"; "faced a grave decision in a time of crisis"; "a grievous fault"; "heavy matters of state"; "the weighty matters to be discussed at the peace conference".
