external

Formal is a synonym of external.

As a noun formal

is an objective.

As an adjective external is

outside of something; on the exterior.

As adjectives the difference between external and ultramarine

is that external is outside of something; on the exterior while ultramarine is of a brilliant blue colour.

As a noun ultramarine is

a brilliant blue pigment that is either extracted from mineral deposits or made synthetically.

External is a related term of ostensible.

As adjectives the difference between external and ostensible

is that external is outside of something; on the exterior while ostensible is apparent, evident; meant for open display.

Tangible is a related term of external.

As adjectives the difference between tangible and external

is that tangible is touchable; able to be touched or felt]]; perceptible by the sense of [[touch#noun|touch; palpable while external is outside of something; on the exterior.

As a noun tangible

is real or concrete results.

Material is a related term of external.

As a noun material

is material (matter which may be shaped or manipulated).

As an adjective external is

outside of something; on the exterior.

External is a related term of perceptible.

As adjectives the difference between external and perceptible

is that external is outside of something; on the exterior while perceptible is able to be perceived, sensed, or discerned.

As a noun perceptible is

anything that can be perceived.

External is a related term of manifest.

As an adjective external

is outside of something; on the exterior.

As a noun manifest is

manifesto.

As an adjective external is

outside of something; on the exterior.

Solid is a related term of external.

As an acronym solid

is (programming|object-oriented).

As an adjective external is

outside of something; on the exterior.