徹頭徹尾

Thorough; penetrating; to pervade; to pass through; to remove; to destroy; to peel off; to cultivate; to follow.

The top part of the body; hair; a leader or boss; the beginning or end of something; a suffix for nouns, verbs, adjectives, or location words.

Tail; the end part of an animal's body; the last part or end of something; a classifier for fish; remnant or remainder.