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Definitions

one and only

ADJECTIVE
one
Synonyms
STRONG
particular separate single singular sole solitary special specific
WEAK
alone definite different lone odd only peculiar precise uncommon unique
Antonyms
STRONG
combined common general indefinite mixed normal ordinary together unimportant united usual
WEAK
none
ADJECTIVE
only
Synonyms
STRONGEST
alone
WEAK
apart by oneself exclusive individual isolated lone matchless once in a lifetime one one-shot particular peerless single sole solitary solo unaccompanied unequaled unique unparalleled unrivaled
ADJECTIVE
sole
Synonyms
STRONGEST
exclusive lone remaining
STRONG
ace individual one particular separate single solitary solo
WEAK
onliest only only one unique unshared
Antonyms
STRONG
combined common general mixed ordinary together united
WEAK
shared
ADJECTIVE
unique
Synonyms
STRONGEST
different exclusive particular rare uncommon
WEAK
individual lone one onliest only separate single solitary solo sui generis unexampled
Antonyms
STRONGEST
common normal ordinary regular usual
WEAK
commonplace like similar standard trite
ADVERB
exclusively
Synonyms
STRONGEST
alone completely entirely only solely wholly
WEAK
but onliest singularly
Antonyms
STRONGEST
incompletely partially
WEAK
unlimited unrestricted
NOUN
beloved
Synonyms
STRONG
baby beau boyfriend darling dear dearest flame girlfriend heartthrob honey idol inamorato love lover pet steady sugar sweetheart treasure
WEAK
fiancé fiancée first and last love of my life number one numero uno object of affection significant other tootsie truelove
NOUN
darling
Synonyms
STRONG
angel baby beloved boyfriend dear dearest dearie flame friend girlfriend love lover pet sugar sweetie treasure truelove
WEAK
apple of one's eye dear one fair-haired boy heart's desire honeybunch light of my life precious
NOUN
sweetheart
Synonyms
STRONGEST
boyfriend companion darling girlfriend heartthrob lover
STRONG
admirer beau beloved dear flame honey inamorata inamorato love lovebird paramour pet steady suitor swain sweet treasure truelove valentine
WEAK
dear one significant other
Antonyms
STRONGEST
enemy foe
NOUN
sweetie
Synonyms
STRONGEST
sweetheart
STRONG
angel baby beloved boyfriend dear dearest dearie flame friend girlfriend honey love lover pet sugar sweet treasure truelove
WEAK
apple of one's eye dear one fair-haired boy heart's desire honeybunch light of my life light of one's life precious

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In its one and only trip to a Champions League final, in 2006, Arsenal fell to Barcelona.

From The Wall Street Journal • May 6, 2026

I tend to bring them places, let people eat one, and only explain after the fact, if at all.

From Salon • May 5, 2026

And as the New York Times reported, Moroun met with the one and only Howard Lutnick on Monday, hours before Trump’s post, after which Lutnick spoke to Trump by phone.

From Slate • Feb. 14, 2026

Desperate for money, she signed a contract attesting that she was “the one and only Tokyo Rose.”

From Los Angeles Times • Nov. 21, 2025

“Lucky thing too, because that was the one and only opportunity you’ll ever have in your whole entire lifetime. You can tell your grandchildren about it,” Piper says.

From "Al Capone Does My Shirts" by Gennifer Choldenko