sub

• subject, subsidize, substitute, substance
• substantial, submit, subsist, subsidiary, subscription, subscribe, subside, subdue, subvert

prefix sub- (under, below, less than) 下面:
substandard, subpar, subtract, subpage, subtopic, subtitle, subhead, subheading, subheadline, subparagraph, subtext, subscript, subplot, subsequent, subsonic, submarine, submerge, subconscious, subliminal, subdivide, submeter, subsystem, subprogram, subroutine, subprotocol, subtype, subcommittee, subgroup, subclass, subdomain, subnet, subforum, subset, sublist, subarray, subsection, subcategory, subfolder, subcontainer, submenu, subentry, subtotal, subcomponent, subassembly, subcompact, subway, subequatorial, subaquatic, subterranean, substrate, subsurface, subsoil, subcontinent, subculture, subrogate, subcontract, subclause, sublicense, subagent, subdistributor, subordinate, subservient, suboptimal, subprime, subsecond, subminiature, subnormal, subdural, subcutaneous, subvocal, subwoofer, sublet, sublease, subtenant, subfloor, subbasement, subzero, subfreezing, subatomic