Noun

• S: (n) eleven, 11, XI (the cardinal number that is the sum of ten and one)
• direct hypernym / inherited hypernym / sister term
• S: (n) large integer (an integer equal to or greater than ten)
• S: (n) integer, whole number (any of the natural numbers (positive or negative) or zero) "an integer is a number that is not a fraction"
• S: (n) number (a concept of quantity involving zero and units) "every number has a unique position in the sequence"
• S: (n) definite quantity (a specific measure of amount)
• S: (n) measure, quantity, amount (how much there is or how many there are of something that you can quantify)
• S: (n) abstraction, abstract entity (a general concept formed by extracting common features from specific examples)
• S: (n) entity (that which is perceived or known or inferred to have its own distinct existence (living or nonliving))
• S: (n) football team, eleven (a team that plays football)
• member holonym
• member meronym
• direct hypernym / inherited hypernym / sister term

Adjective

• S: (adj) eleven, 11, xi (being one more than ten)
• similar to
• S: (adj) cardinal (being or denoting a numerical quantity but not order) "cardinal numbers"
• antonym