Synonym: 1, I, ace, ane, i, matchless, nonpareil, one and only, one, peerless, single, unitary, unity, unmatchable, unmatched, unrivaled, unrivalled. Similar words: done, on, once, tone, zone, on end, age, and. Meaning: [wʌn] 
n. 1. the smallest whole number or a numeral representing this number 2. a single person or thing. adj. 1. used of a single unit or thing; not two or more 2. having the indivisible character of a unit 3. of the same kind or quality 4. used informally as an intensifier 5. indefinite in time or position 6. being a single entity made by combining separate components 7. eminent beyond or above comparison.
n. 1. the smallest whole number or a numeral representing this number 2. a single person or thing. adj. 1. used of a single unit or thing; not two or more 2. having the indivisible character of a unit 3. of the same kind or quality 4. used informally as an intensifier 5. indefinite in time or position 6. being a single entity made by combining separate components 7. eminent beyond or above comparison. 
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91. Hang up one's fiddle when one comes home. 
92. Many [Two] heads are better than one.
93. There's more than one way to skin a cat.
94. One cannot be in two place at once.
95. One misfortune comes on the neck of another.
96. False with one can be false with two.
97. One swallow does not make a summer.
98. It takes one to know one.
99. Pride and grace dwell never in one place.
100. A true friend is one soul in two bodies.
101. Friendship ---- one soul in two bodies.
102. This time it will be a long one.
103. One woe doth tread upon another’s heels.
104. He that is one born, once must die.
105. The best teacher one can have is necessity.
106. One boy is more trouble than a dozen girls.
107. One may sooner fall than rise.
108. One cannot put back the clock.
108. Sentencedict.com try its best to collect and build good sentences.
109. No man [one] is without his faults.
110. No one can have all he desires.
111. All for one, one for all.
112. One hour's sleep before midnight is worth three after.
113. Ignorance of the law excuses no man [one].
114. One today is worth two tomorrows.
115. One who can do everything can do nothing.
116. One of these days is none of these days.
117. One misfortune rides upon another’s back.
118. Never hang a man twice for one offenece.
119. Every one’s faults are not written in their foreheads.
120. One must draw the line somewhere.