slow vs dull

slow and dull both are adjectives.

Word	Noun	Adjective	Verb	Adverb
slow	No	Yes	Yes	Yes
dull	No	Yes	Yes	No

As adjectives, slow and dull are synonyms defined as:

Other synonyms of slow include sluggish.

As adjectives, slow and dull are synonyms defined as:

Other synonyms of slow include dense, dim, dumb, obtuse.

As adjectives, slow and dull are synonyms defined as:

Other synonyms of slow include boring, deadening, ho-hum, irksome, tedious, tiresome, wearisome.

slow (adjective)	dull (adjective)
not moving quickly; taking a comparatively long time	not having a sharp edge or point
at a slow tempo	emitting or reflecting very little light
(used of timepieces) indicating a time earlier than the correct time	lacking in liveliness or animation
(of business) not active or brisk	not keenly felt
slow to learn or understand; lacking intellectual acuity	darkened with overcast
so lacking in interest as to cause mental weariness	(of business) not active or brisk
	blunted in responsiveness or sensibility
	being or made softer or less loud or clear
	slow to learn or understand; lacking intellectual acuity
	not clear and resonant; sounding as if striking with or against something relatively soft
	(of color) very low in saturation; highly diluted
	so lacking in interest as to cause mental weariness

slow (verb)	dull (verb)
lose velocity; move more slowly	become dull or lusterless in appearance; lose shine or brightness
become slow or slower	make less lively or vigorous
cause to proceed more slowly	become less interesting or attractive
	make dull in appearance
	make dull or blunt
	deaden (a sound or noise), especially by wrapping
	make numb or insensitive

slow (adverb)	dull (adverb)
without speed (`slow' is sometimes used informally for `slowly')
showing a time that is earlier than the actual time