efficient

As adjectives the difference between efficient and economic

is that efficient is efficient while economic is economic.

As adjectives the difference between smooth and efficient

is that smooth is having a texture that lacks friction not rough while efficient is efficient.

As an adverb smooth

is smoothly.

As a noun smooth

is something that is , or that goes smoothly and easily.

As a verb smooth

is to make smooth or even.

As an adjective efficient

is efficient.

As a verb precise is

.

As adjectives the difference between efficient and futile

is that efficient is efficient while futile is incapable of producing results; useless; not successful; not worth attempting.

Efficient is a related term of trustworthy.

As adjectives the difference between efficient and trustworthy

is that efficient is efficient while trustworthy is deserving of trust, reliable.

As adjectives the difference between essential and efficient

is that essential is necessary while efficient is efficient.

As a noun essential

is a necessary ingredient.

Mighty is a related term of efficient.

As adjectives the difference between mighty and efficient

is that mighty is very strong; possessing might while efficient is efficient.

As a noun mighty

is influential, powerful beings or mighty can be (obsolete|rare) a warrior of great strength and courage.

As an adverb mighty

is (colloquial) very; to a high degree.

Efficient is a synonym of material.

As an adjective efficient

is efficient.

As a noun material is

material (matter which may be shaped or manipulated).