List of 15-letter words beginning with

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There are 15 fifteen-letter words beginning with SI

SIDESPLITTINGLY	• sidesplittingly adv. In a sidesplitting manner; hilariously. • side-splittingly adv. In a side-splitting way, extremely funnily. • SIDESPLITTING adv. extremely funny.
SIGHTLESSNESSES	• SIGHTLESSNESS n. the state of being sightless.
SIGMOIDECTOMIES	• sigmoidectomies n. Plural of sigmoidectomy. • SIGMOIDECTOMY n. removal of the sigmoid colon.
SIGMOIDOSCOPIES	• sigmoidoscopies n. Plural of sigmoidoscopy. • SIGMOIDOSCOPY n. examination of the interior of the rectum and sigmoid colon.
SIGNIFICATIVELY	• significatively adv. In a significative manner. • SIGNIFICATIVE adv. significant, suggestive.
SILICIFICATIONS	• silicifications n. Plural of silicification. • SILICIFICATION n. a process whereby silica replaces the original material of a substance, e.g. wood.
SILVERSMITHINGS	• SILVERSMITHING n. the craft of the silversmith.
SILVICULTURALLY	• silviculturally adv. In terms of, or by means of, silviculture. • SILVICULTURAL adv. relating to silviculture, also SYLVICULTURAL.
SILVICULTURISTS	• silviculturists n. Plural of silviculturist. • SILVICULTURIST n. one who practises silviculture, the growing of trees.
SIMPLICIDENTATE	• SIMPLICIDENTATE adj. denoting a member of the Simplicidentata, rodents.
SIMPLIFICATIONS	• simplifications n. Plural of simplification. • SIMPLIFICATION n. the act of simplifying.
SINGULARISATION	• singularisation n. Alternative form of singularization. • SINGULARISATION n. the process of singularising, also SINGULARIZATION.
SINGULARIZATION	• singularization n. The process or result of singularizing. • SINGULARIZATION n. the process of singularizing, also SINGULARISATION.
SINISTRODEXTRAL	• sinistrodextral adj. Moving or directed from the left to the right. • SINISTRODEXTRAL adj. going or directed from left to right, as a sinistrodextral script.
SINTERABILITIES	• sinterabilities n. Plural of sinterability. • SINTERABILITY n. the capacity for being sintered.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the 1Word.ws and WikWik.org.

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See this list for:

English Wiktionary: 195 words
Scrabble in French: 31 words
Scrabble in Spanish: 66 words
Scrabble in Italian: 183 words
Scrabble in German: no word
Scrabble in Romanian: 118 words

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