fearless

As adjectives the difference between keen and fearless

is that keen is showing a quick and ardent willingness or responsiveness, enthusiastic, eager; interested, intense while fearless is free from fear.

As a verb keen

is (rare) to sharpen; to make cold or keen can be to utter a keen.

As a noun keen

is a prolonged wail for a deceased person.

As a verb overwhelm

is to engulf, surge over and submerge.

As an adjective fearless is

free from fear.

As adjectives the difference between fearless and shameless

is that fearless is free from fear while shameless is having no shame, no guilt nor remorse over something wrong; immodest; unable to feel disgrace.

As adjectives the difference between determinated and fearless

is that determinated is (nonstandard) determined while fearless is free from fear.

As adjectives the difference between fearless and ruthless

is that fearless is free from fear while ruthless is without pity or compassion; cruel, pitiless.

Fearless is a related term of manful.

As adjectives the difference between fearless and manful

is that fearless is free from fear while manful is showing the characteristics considered typical of a man; macho or manly.

As adjectives the difference between fearless and foolhardy

is that fearless is free from fear while foolhardy is marked by unthinking recklessness with disregard for danger; bold but rash; hotheaded.

Fearless is a related term of unshrinking.

As adjectives the difference between fearless and unshrinking

is that fearless is free from fear while unshrinking is not shrinking.

Fearless is a related term of hardy.

As an adjective fearless

is free from fear.

As a proper noun hardy is

, originally a nickname for a hardy person.

As adjectives the difference between fearless and confident

is that fearless is free from fear while confident is very sure of something; positive.

As a noun confident is

.