vigorous

As adjectives the difference between vigorous and light

is that vigorous is physically strong and active while light is having light.

As a noun light is

the natural medium emanating from the Sun and other very hot sources (now recognised as electromagnetic radiation with a wavelength of 400-750 nm), within which vision is possible.

As a verb light is

to start (a fire).

As an adverb light is

carrying little.

As a proper noun Light is

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As adjectives the difference between effervescent and vigorous

is that effervescent is (of a liquid) giving off bubbles; fizzy while vigorous is physically strong and active.

As adjectives the difference between vigorous and adynamic

is that vigorous is physically strong and active while adynamic is not dynamic; without strength or vigor.

As adjectives the difference between capacity and vigorous

is that capacity is filling the allotted space while vigorous is physically strong and active.

As a noun capacity

is the ability to hold, receive or absorb.

As adjectives the difference between flexible and vigorous

is that flexible is capable of being flexed or bent without breaking; able to be turned, bowed, or twisted, without breaking; pliable; not stiff or brittle while vigorous is physically strong and active.

As a noun flexible

is (chiefly|engineering|and|manufacturing) something that is flexible.

As adjectives the difference between vigorous and proactive

is that vigorous is physically strong and active while proactive is acting in advance to deal with an expected change or difficulty.

As adjectives the difference between vigorous and marginal

is that vigorous is physically strong and active while marginal is (uncomparable) of, relating to, or located at or near a margin or edge; also figurative usages of location and margin (edge) .

As a noun marginal is

something that is.

As adjectives the difference between vigorous and livid

is that vigorous is physically strong and active while livid is livid.

As adjectives the difference between vigorous and relentless

is that vigorous is physically strong and active while relentless is unrelenting or unyielding in severity.

As a noun confidence

is passive self-assurance.

As an adjective vigorous is

physically strong and active.