heavy

darkened by clouds

“a heavy sky”

of great intensity or power or force

“a heavy blow”

“the fighting was heavy”

“heavy seas”

(physics, chemistry) being or containing an isotope with greater than average atomic mass or weight

“heavy hydrogen”

“heavy water”

(of an actor or role) being or playing the villain

“Iago is the heavy role in ‘Othello’”

permitting little if any light to pass through because of denseness of matter

“dense smoke”

“heavy fog”

“impenetrable gloom”

of relatively large extent and density

“a heavy line”

made of fabric having considerable thickness

“a heavy coat”

prodigious

“big spender”

“big eater”

“heavy investor”

full and loud and deep

“heavy sounds”

“a herald chosen for his sonorous voice”

given to excessive indulgence of bodily appetites especially for intoxicating liquors

“a hard drinker”

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”

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”

large and powerful; especially designed for heavy loads or rough work

“a heavy truck”

“heavy machinery”

dense or inadequately leavened and hence likely to cause distress in the alimentary canal

“a heavy pudding”

sharply inclined

“a heavy grade”

full of; bearing great weight

“trees heavy with fruit”

“vines weighed down with grapes”

requiring or showing effort

“heavy breathing”

“the subject made for labored reading”

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”

lacking lightness or liveliness

“heavy humor”

“a leaden conversation”

(of sleep) deep and complete

“a heavy sleep”

“fell into a profound sleep”

“a sound sleeper”

“deep wakeless sleep”

in an advanced stage of pregnancy

“was big with child”

“was great with child”