weaken vs dim

weaken is not an adjective while dim is an adjective.

Word	Noun	Adjective	Verb	Adverb
weaken	No	No	Yes	No
dim	No	Yes	Yes	No

As verbs, dim is a hyponym of weaken; that is, dim is a word with a more specific, narrower meaning than weaken:

weaken (adjective)	dim (adjective)
	made dim or less bright
	lacking in light; not bright or harsh
	offering little or no hope
	lacking clarity or distinctness
	slow to learn or understand; lacking intellectual acuity

weaken (verb)	dim (verb)
become weaker	make dim or lusterless
lessen the strength of	become dim or lusterless
reduce the level or intensity or size or scope of	make dim by comparison or conceal
lessen in force or effect	become vague or indistinct
destroy property or hinder normal operations	switch (a car's headlights) from a higher to a lower beam