底

bottom

thoroughness

bottom of the ocean

root

bottoming out (of prices)

undercurrent

thorough

hidden reserves of strength

base (of a polygon)

bottoming out

bottom price

bottom of one's heart

riverbed

ship's bottom

(cannot) possibly

depths of the earth

inconsistent

trawl (net)

bottomless (bucket, etc.)

bottom of a lake

sea or river bottom

subterranean humanoids (in fiction)

insole

original text

depths

valley floor

ownership of leased land where a house is owned by the tenant

underworld

base

bottom of one's heart

flat bottom

double bottom (ship, trunk, etc.)

latent disposition

base

subsoil

to hit the bottom

raising (the standard)

false bottom

well bottom

double dip

bottomless

bottomless

bottomless

undersea cable

undersea tunnel

true intention

sole leather

base address

base address register

base class

base register

planta

nadir

local basis

round-bottom

being connected at a fundamental level

submarine topography

submarine volcano

lower brain

inner glow or light

apple of one's eye

benthic

submarine valley

base

submarine telegraphy

dark of the night

basal ganglia

valley plain

situation where the bottom has dropped out

to be found out

cessation

offshore oil field

benthic animal

bottom

flat-bottomed boat

malicious (at heart)

malicious (at heart)

basic solution

base component

reaching the bottom

base of the brain

complement base

very deep

ground state

very bottom

bottomless

to run out of

thick glasses

bottom gusset

ocean floor

benthic organism

bottom water (depth: 4000+ meters)

strange

undersea cable (communications, power)

basal ganglia

bottom material

base structure

seabed probe

Twenty Thousand Leagues Under the Sea: A Tour of the Underwater World (1870 novel by Jules Verne)

innermost depths of one's heart

submarine earthquake

shortage

thick soles

stowage at the bottom

submarine coal field

extremely heavy drinker

lower classes

underground lake

plantar reflex

stable (market) after having bottomed out

orthonormal basis

base angle

depths of Hell

thorough investigation

making (something) known to everyone

do-or-die resistance

base slab

breechblock (of a gun)

funduscopy

mixed base (numeration) system

basilar artery

the bottom of one's heart

ballast

mixed base (numeration) system

floating-point base

attain divine enlightenment

ears

hemorrhage in the fundus of the eye

bottom-dwelling fish

lingering recession

pelvic floor

do your best

cloud base

blister (on the sole of the foot)

bottom rim of earthenware cup

plantar flexion

basement membrane

totally useless (fruitless) effort

bitterly cold

theriac (antidote to poison)

bottom of a box

pelvic floor muscle

bottom of a can

platform shoes

ground moraine

marine sediment

cable layer

sole (of a shoe)

bottom depths (of water)

offshore trawl fishery