[{"Bold_text": "noun", "List Items": ["a submarine.", "a substitute:We've got a sub in English this week because our teacher's home with the flu.", "a submarine sandwich.", "a submissive in a BDSM sexual encounter or relationship.", "a subcontractor.", "a sublieutenant.", "a subordinate.", "a subaltern.", "British.an advance against one's wages, especially one granted as a subsistence allowance.", "Photography.a substratum."]}, {"Bold_text": "verb (used without object)", "List Items": ["to act as a substitute for another.", "to act as the submissive partner in a BDSM sexual encounter or relationship."]}, {"Bold_text": "verb (used with object)", "List Items": ["Photography.to coat (a film or plate) with a substratum."]}, {"Bold_text": "abbreviation for", "List Items": ["supplemental unemployment benefits."]}, {"Bold_text": null, "List Items": ["a prefix occurring originally in loanwords from Latin (subject; subtract; subvert; subsidy); on this model, freely attached to elements of any origin and used with the meaning “under,” “below,” “beneath” (subalpine; substratum), “slightly,” “imperfectly,” “nearly” (subcolumnar; subtropical), “secondary,” “subordinate” (subcommittee; subplot).", "Chemistry.a prefix indicating a basic compound:subacetate; subcarbonate; subnitrate.a prefix indicating that the element is present in a relatively small proportion, i.e., in a low oxidation state:subchloride; suboxide.", "a prefix indicating a basic compound:subacetate; subcarbonate; subnitrate.", "a prefix indicating that the element is present in a relatively small proportion, i.e., in a low oxidation state:subchloride; suboxide."]}, {"Bold_text": "abbreviation for", "List Items": ["subordinated.", "subscription.", "substitute.", "suburb.", "suburban.", "subway."]}]