WordMeaning
submergeto put or sink below the surface of water
submarinea vessel that operates underwater
subseta part of a larger group or set
subwayan underground railway
subsoilthe layer of soil beneath the topsoil
subscribeto agree to receive or support something regularly
subdueto bring under control
subsideto become less intense or severe
substitutea person or thing that takes the place of another
subterraneanexisting or operating below the earth’s surface
substandardbelow the usual or required standard
submissiveready to conform or obey without resistance
subtopica topic that is part of a larger topic
subcontinenta large, distinct part of a continent
subordinatelower in rank or position
subatomicsmaller than an atom
subtotalthe total before the final amount
subtitletext displayed at the bottom of a movie or TV screen
subhumanless than human
subcommitteea smaller part of a larger committee
subculturea cultural group within a larger culture
subfloorthe layer beneath the finished floor
subconsciousthe part of the mind not fully aware but influencing actions
subsidizeto support financially
subsequentcoming after something in time
subscriptionan agreement to receive something regularly
subheadinga title of a section under a main heading
submergeablecapable of being submerged
submissivenessthe quality of being obedient or passive
subdivideto divide into smaller parts
subarctica region immediately south of the Arctic
subeditora person who prepares reports for publication
submachinea lightweight automatic gun
subspeciesa group within a species
subconsciousnessthe state of being partly aware
subleaseto lease a property under a larger lease
subluxationa partial dislocation
subtextthe underlying or implicit meaning
subpoenaa legal document ordering someone to court
subzerobelow zero degrees
subsonicslower than the speed of sound
subdivisiona section formed from a larger part
subclinicalnot severe enough to present definite symptoms
subglacialbeneath a glacier
submaximalbelow the maximum level
subcontracta contract given to a third party
subregiona smaller area within a region
subrogationsubstitution of one person for another in a legal claim
subscription-basedrequiring payment for access
subnationalexisting within a nation
subdisciplinea branch of a broader academic subject
subsystema secondary or subordinate system
subgrida smaller grid within a larger one
subaqueousexisting or formed underwater
subadultnot fully adult
subkingdoma category in biological classification
subdermalunder the skin
subethnica subgroup within an ethnic group
submentalitya state of lower or limited mental function
sublethalnot enough to cause death
subfamilya category in biological classification below family
subculturalrelated to a subculture
subdivisionalrelating to a subdivision
subflooringmaterial under the surface flooring
suborbitalnot reaching orbit
submersionthe act of sinking below the surface
subcategorya category within a category
subheadinga heading under a main heading
subeditorialrelating to the editing of a subsection
subclausea clause that depends on a main clause
submandibularbeneath the jaw
subcellularwithin a cell
submicroscopictoo small to be seen with a regular microscope
sublingualunder the tongue
subcutaneousunder the skin
subcorticalbelow the cortex of an organ, especially the brain
subcranialbeneath the skull
subduralbelow the outermost layer of the brain covering
subfielda specialized field within a broader discipline
subglotticbelow the vocal cords
submarginalnear the edge but not at the margin
subnationalismloyalty to a subdivision of a nation
subnetworka smaller network within a larger one
subnotebooka small laptop computer
subparagrapha smaller unit of a paragraph
subphyluma division below phylum in biological taxonomy
subpopulationa smaller group within a population
subprograma program that performs a specific task within a larger program
subroutinea sequence of instructions in a program
subscalea smaller scale within a larger scale
subscripta character set slightly below the normal line of type
subsegmenta smaller segment
subsonicallyin a manner slower than sound
subspacea subset of a mathematical space
substationa facility for transforming electricity
substitutea person or thing that takes the place of another
subtractionthe process of taking away
subtenancythe possession of a property by a subtenant
subtitlecaptions shown at the bottom of a screen
subterraneouslyin an underground way
subtherapeuticbelow the level needed for treatment
subtrahenda number that is subtracted
subunita distinct component of a larger unit
subventiona grant of money
subvertto undermine or overthrow
subversionthe act of undermining authority