What does bottomless mean?
Bottomless is an adjective describing something that has no bottom or whose depths are so great that no bottom can be perceived. Its most familiar uses are both concrete and figurative: a bottomless pit or canyon appears to descend forever, while a bottomless supply of money, patience, or appetite seems impossible to exhaust. The word often carries a note of unease — bottomless despair, a bottomless hunger — suggesting excess without limit or end. In modern informal usage it has acquired a cheerful commercial meaning: restaurants advertise bottomless coffee, cocktails, or brunch, meaning unlimited refills for a fixed price. It can also describe clothing that leaves the lower body uncovered, though this sense is comparatively narrow. Formed from the everyday noun bottom plus the suffix -less, the word has been part of English since late medieval times. Its flexibility between physical depth and metaphorical abundance makes it vivid, economical, and enduringly useful.
Having no bottom, or so deep that a bottom cannot be seen or reached.
"They peered down into the bottomless well."
Most common in literal descriptions of deep natural or man-made features.
Seemingly limitless or inexhaustible.
"Her optimism seemed bottomless even after months of setbacks."
(Of clothing) leaving the lower part of the body uncovered.
"The resort's pool area had strict rules against swimwear that was effectively bottomless."
A 'bottomless' mimosa brunch never actually runs out — but the word itself is over 600 years old, and English speakers have been describing their appetites with it almost that long.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of bottomless
Bottomless is formed within English from the noun 'bottom', which derives from Old English 'botm' (the base or lowest part of something), combined with the adjectival suffix '-less'. The word was already established by Middle English, appearing in religious and moral writing to describe hellish abysses before extending into figurative use. Its cognates are essentially other derivatives of 'bottom' itself, such as 'bottomless' kin terms like 'bottommost'; there are no foreign cognates beyond the shared Germanic root behind 'bottom'.
Related word forms
How bottomless is actually used
The literal sense applies to pits, chasms, and bodies of water. The figurative sense — 'bottomless' supplies, funds, appetites, or misery — is very common and often carries a connotation of something dangerous, excessive, or unsustainable. In modern hospitality contexts, 'bottomless' is standard commercial shorthand for unlimited refills (as in bottomless brunch), typically in informal register.
Easily confused with bottomless
Fathomless means too deep to be measured (a fathom being a unit of depth), while bottomless means having no bottom at all or seeming endless; fathomless is more literary and usually applies only to literal or metaphorical depth.