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Words starting with SI (10-letter)

A curated list of 10-letter words tailored to this exact pattern. When a clue points to SI starts, alternate vowel patterns and common blends after the prefix. For example: sialagogue, sibilances, sibilantly.

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95 words

Word	Length	Syllables
sialagogue	10	3
sibilances	10	4
sibilantly	10	4
sibilating	10	4
sibilation	10	4
sicklemias	10	3
sickliness	10	3
sicknesses	10	3
sideboards	10	3
sideburned	10	4
sidelights	10	3
sideliners	10	4
sidelining	10	4
sidepieces	10	4
siderolite	10	4
sidesaddle	10	3
sidestream	10	3
sidestroke	10	3
sideswiped	10	4
sideswipes	10	4
sidetracks	10	3
sidewinder	10	4
sightliest	10	2
sightseers	10	2
signalised	10	4
signalises	10	4
signalized	10	4
signalizes	10	4
signallers	10	3
signalling	10	3
signalment	10	3
signatures	10	4
signboards	10	2
signifieds	10	3
signifiers	10	3
signifying	10	3
signiories	10	3
signorinas	10	4
signposted	10	3
silentness	10	3
silhouette	10	2
silicified	10	4
silicifies	10	4
silicotics	10	4
silkalines	10	4
silkolines	10	4
siltations	10	3
siltstones	10	3
silverback	10	3
silverfish	10	3
silverside	10	3
silverware	10	3
silverweed	10	3
similarity	10	5
similitude	10	4
simoniacal	10	4
simonizing	10	4
simpleness	10	3
simpletons	10	3
simplicial	10	3
simplicity	10	4
simplified	10	3
simplifier	10	3
simplifies	10	3
simplistic	10	3
simulacres	10	4
simulacrum	10	4
simulating	10	4
simulation	10	4
simulative	10	4
simulators	10	4
simulcasts	10	3
sincipital	10	4
sinfulness	10	3
singleness	10	3
singletons	10	3
singletree	10	2
singspiels	10	2
singularly	10	4
sinicizing	10	4
sinisterly	10	4
sinistrous	10	3
sinoatrial	10	3
sinologies	10	4
sinologist	10	4
sinologues	10	4
sinsemilla	10	4
sinusoidal	10	4
sisterhood	10	3
sitologies	10	4
sitosterol	10	4
situations	10	3
sixteenmos	10	3
sixteenths	10	2
sizinesses	10	4

FAQs

Are SI-starting words common?
SI is a frequent start; probing vowel swaps after SI quickly narrows options.

Is this list good for crosswords?
Yes—filter by length mentally and scan definitions when available.