odd number
Not divisible equally
An odd number is an integer that cannot be divided evenly by two—it always leaves a remainder of one.
The odd numbers are 1, 3, 5, 7, 9, and so on.
In everyday contexts, odd numbers often feel less tidy than even ones: We need one more player—we've got an odd number.
Number lacking fractions
nine · eleven · thirteen · fifteen · seventeen · nineteen · twenty-one · twenty-three
Favored by chance
- unluckyProne to misfortune
- thirteenAfter twelve, before fourteen
- sevenFourth prime number
- threeSum of one twice
omens · fortune · triskaidekaphobia · mystical · sacred · symbolic · numerology · auspicious
Not smooth or balanced
- unpairedHaving no counterpart
- leftoverFood saved after meals
- mismatchedNot fitting together properly
- asymmetricalNot equal on both sides
lopsided · extra · remainder · surplus · incomplete · unequal · lone · solitary
integer
Number lacking fractions
seven · nine · eleven · thirteen · fifteen · seventeen · nineteen · twenty-one · twenty-three · twenty-seven
lucky
Favored by chance
three · omens · fortune · triskaidekaphobia · mystical · sacred · symbolic · numerology · auspicious · inauspicious
uneven
Not smooth or balanced
- unpairedHaving no counterpart
- leftoverFood saved after meals
- mismatchedNot fitting together properly
asymmetrical · lopsided · extra · remainder · surplus · incomplete · unequal · lone · solitary · orphan
unusual
Not often encountered
singular · uncommon · atypical · exceptional · rare · bizarre · eccentric · idiosyncratic · anomalous · unconventional
- number formatsinteger, decimal, binary, percentage, hexadecimal
- parity termschecksum, data integrity, gender parity, pay equity
- Singletonssingleton, single instance, bachelor, spinster, lone wolf
- arithmeticaddition, subtraction, multiplication, division, sum
- numbersone, two, four, three, 0
- math termsnumbers, plus or minus, linear growth, square, operand