Synonyms of the word

one-fifth

• adj. Being one fifth of the usual dimension.

fifth

• adj. The ordinal form of the number five.
• n. The person or thing in the fifth position.
• n. One of five equal parts of a whole.
• n. The fifth gear of an engine.
• n. A quantity of liquor equal to one-fifth of a gallon, or, more commonly, 750 milliliters.
• n. The musical interval between one note and another five tones higher.
• n. The fifth voice in a polyphonic melody.