As a verb underestimate

is to perceive (someone or something) as having a lower value, quantity, worth, etc, than what he/she/it actually has.

As a noun underestimate

is an estimate or perception that is too low.

As an adjective dismissive is

showing disregard, indicating rejection, serving to dismiss.

As a verb assuring

is .

As an adjective unwavering is

never doubted; always steady and on course.

As adjectives the difference between wary and determined

is that wary is cautious of danger; carefully watching and guarding against deception, artifices, and dangers; timorously or suspiciously prudent; circumspect; scrupulous; careful while determined is decided; resolute, possessing much determination.

As a verb determined is

(determine).

As adjectives the difference between casual and lighthearted

is that casual is happening by chance while lighthearted is joyful, glad, taking pleasure in being alive not depressed or sad.

As a noun casual

is (british|nz) a worker who is only working for a company occasionally, not as its permanent employee.

As adjectives the difference between formidable and malleable

is that formidable is causing fear, dread, awe or admiration as a result of size, strength, or some other impressive quality; commanding respect; causing wonder or astonishment while malleable is malleable (able to be hammered into thin sheets).

In lang=en terms the difference between sneak and abscond

is that sneak is (informal, especially with on) to inform an authority about another's misdemeanours; to tell tales; to grass while abscond is to withdraw from .

As verbs the difference between sneak and abscond

is that sneak is to creep or go stealthily; to come or go while trying to avoid detection, as a person who does not wish to be seen while abscond is (intransitive|reflexive|archaic) to hide, to be in hiding or concealment.

As a noun sneak

is one who sneaks; one who moves stealthily to acquire an item or information.

As an adjective sneak

is in advance; before release to the general public.

As nouns the difference between womans and women

is that womans is (nonstandard|proscribed) while women is (woman).

As adjectives the difference between systematic and attractive

is that systematic is carried out using a planned, ordered procedure while attractive is causing attraction; having the quality of attracting by inherent force.

As nouns the difference between royal and sovereign

is that royal is (soccer) someone connected with , as a fan, player, coach etc while sovereign is a monarch; the ruler of a country.

As adjectives the difference between royal and sovereign

is that royal is (used in terms of address or reference to members of a royal family) while sovereign is exercising power of rule.

As a proper noun royal

is .

As adjectives the difference between reserved and easygoing

is that reserved is (comparable) slow to reveal emotion or opinions while easygoing is (of a person) calm, relaxed, casual and informal.

As a verb reserved

is (reserve).