The difference between Complete and Utter

When used as verbs, complete means to finish, whereas utter means to say.

When used as adjectives, complete means with all parts included, whereas utter means outer.

Complete is also noun with the meaning: a completed .

Utter is also adverb with the meaning: further out.

check bellow for the other definitions of Complete and Utter

Complete as a verb (transitive):

To finish; to make done; to reach the end.

Examples:

"He completed the assignment on time."
Complete as a verb (transitive):

To make whole or entire.

Examples:

"The last chapter completes the book nicely."

Complete as an adjective:

With all parts included; with nothing missing; full.

Examples:

"My life will be complete once I buy this new television."

"She offered me complete control of the project."

"After she found the rook, the chess set was complete."
Complete as an adjective:

Finished; ended; concluded; completed.

Examples:

"When your homework is complete, you can go and play with Martin."
Complete as an adjective:

.

Examples:

"He is a complete bastard!"

"It was a complete shock when he turned up on my doorstep."

"Our vacation was a complete disaster."
Complete as an adjective (analysis, of a [[metric space]]):

In which every Cauchy sequence converges to a point within the space.
Complete as an adjective (algebra, of a [[lattice]]):

In which every set with a lower bound has a greatest lower bound.
Complete as an adjective (math, of a [[category]]):

In which all small limits exist.
Complete as an adjective (logic, of a proof system of a [[formal system]] with respect to a given [[semantics]]):

In which every semantically valid well-formed formula is provable.
Complete as an adjective (computing theory, of a [[problem]]):

That is in a given complexity class and is such that every other problem in the class can be reduced to it (usually in polynomial time or logarithmic space).

Utter as an adjective (now, _, poetic, literary):

Outer; furthest out, most remote.
Utter as an adjective (obsolete):

Outward.
Utter as an adjective:

Absolute, unconditional, total, complete.

Examples:

"utter ruin; utter darkness"

Utter as a verb (transitive):

To say

Examples:

"Don't you utter another word!"
Utter as a verb (transitive):

To use the voice

Examples:

"Sally uttered a sigh of relief."

"The dog uttered a growling bark."
Utter as a verb (transitive):

To make speech sounds which may or may not have an actual language involved

Examples:

"Sally is uttering some fairly strange things in her illness."
Utter as a verb (transitive):

To make (a noise)

Examples:

"Sally's car uttered a hideous shriek when she applied the brakes."
Utter as a verb (legal, transitive):

To put counterfeit money, etc., into circulation