| bilabial | (adjective) of or relating to or being a speech sound that is articulated using both lips | - |
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| bilabiate | (adjective) having two lips | Synonyms: two-lipped |
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| bilateral | (adjective) having two sides or parts | Synonyms: two-sided |
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| (adjective) affecting or undertaken by two parties | - |
| (adjective) having identical parts on each side of an axis | Synonyms: bilaterally symmetric, bilaterally symmetrical, isobilateral |
| isobilateral | (adjective) having identical parts on each side of an axis | Synonyms: bilateral, bilaterally symmetric, bilaterally symmetrical |
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| jubilant | (adjective) joyful and proud especially because of triumph or success | Synonyms: exultant, exulting, prideful, rejoicing, triumphal, triumphant |
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| (adjective) full of high-spirited delight | Synonyms: elated, gleeful, joyful |
| sibilant | (adjective) of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then') | Synonyms: continuant, fricative, spirant, strident |
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