IS
BE
be
(verb) spend or use time; “I may be an hour”
be, follow
(verb) work in a specific place, with a specific subject, or in a specific function; “He is a herpetologist”; “She is our resident philosopher”
exist, be
(verb) have an existence, be extant; “Is there a God?”
be
(verb) have the quality of being; (copula, used with an adjective or a predicate noun); “John is rich”; “This is not a good answer”
be, live
(verb) have life, be alive; “Our great leader is no more”; “My grandfather lived until the end of war”
be
(verb) be identical to; be someone or something; “The president of the company is John Smith”; “This is my house”
constitute, represent, make up, comprise, be
(verb) form or compose; “This money is my only income”; “The stone wall was the backdrop for the performance”; “These constitute my entire belonging”; “The children made up the chorus”; “This sum represents my entire income for a year”; “These few men comprise his entire army”
be
(verb) occupy a certain position or area; be somewhere; “Where is my umbrella?”; “The toolshed is in the back”; “What is behind this behavior?”
equal, be
(verb) be identical or equivalent to; “One dollar equals 1,000 rubles these days!”
embody, be, personify
(verb) represent, as of a character on stage; “Derek Jacobi was Hamlet”
cost, be
(verb) be priced at; “These shoes cost $100”
be
(verb) happen, occur, take place; “I lost my wallet; this was during the visit to my parents’ house”; “There were two hundred people at his funeral”; “There was a lot of noise in the kitchen”
Source: WordNet® 3.1
Etymology 1
Verb
is
Third-person singular simple present indicative form of be
(now, colloquial) Used in phrases with existential there when the semantic subject is a third-person plural.
Synonyms
• beeth (archaic)
• bes (African-American Vernacular)
Etymology 2
Noun
is
plural of i
Anagrams
• S. I., S.I., SI, Si, Si., si
Proper noun
IS
Initialism of Islamic State.
(languages) Initialism of Interior Salish.
Synonyms
• (Islamic State): ISIS, ISIL, Daesh
Noun
IS
Initialism of International Sign.
(computing) Initialism of information system(s).
(politics) Initialism of international studies.
Anagrams
• S. I., S.I., SI, Si, Si., si
Noun
Is
plural of I
Abbreviation of Islands. (also Is.)
Anagrams
• S. I., S.I., SI, Si, Si., si
Source: Wiktionary