truculent

As an adjective truculent

is cruel or savage.

As a noun truckle is

a small wheel; a caster or pulley.

As a verb truckle is

to roll or move upon truckles, or casters; to trundle or truckle can be to act in a submissive manner; to fawn, submit to a superior.

As adjectives the difference between truculent and poignant

is that truculent is cruel or savage while poignant is (obsolete|of a weapon etc) sharp-pointed; keen.

As adjectives the difference between truculent and angry

is that truculent is cruel or savage while angry is displaying or feeling anger.

As adjectives the difference between scrappy and truculent

is that scrappy is consisting of scraps; fragmentary; lacking unity or consistency while truculent is cruel or savage.

As adjectives the difference between truculent and inimical

is that truculent is cruel or savage while inimical is harmful in effect.

As adjectives the difference between truculent and facetious

is that truculent is cruel or savage while facetious is treating serious issues with deliberately inappropriate humour; flippant.

As adjectives the difference between truculent and loony

is that truculent is cruel or savage while loony is (of a person) insane.

As a noun loony is

an insane or very foolish person.

As adjectives the difference between recalcitrant and truculent

is that recalcitrant is marked by a stubborn unwillingness to obey authority while truculent is cruel or savage.

As a noun recalcitrant

is a person who is recalcitrant.

Rebellious is a related term of truculent.

As adjectives the difference between rebellious and truculent

is that rebellious is showing rebellion while truculent is cruel or savage.