is-

See also: Appendix:Variations of "is"

English

Prefix

is-

1. form of iso- before a vowel

Derived terms

• isentropic

Anagrams

• s͞i, Si., S. I., SI, S.I., si, Si

Choctaw

Prefix

is- (except before s ish-, class I second-person singular)

1. the subject of an active transitive verb

   you, thou

2. the subject of an intransitive active verb

   you, thou

3. the subject of a negative imperative verb
   Sakopōlih! → Issakopōlinna!

   Bite me! → Don't bite me!

Inflection

Choctaw Person Markers

			class I			class II		class III		class N		imperative
			+s	+C	+V	+C/i	+a/o	+C	+V	+C	+V	+C	+V
first-person	singular	initial	-li			sa-	si-	a̱-	am-	ak-		n/a
		medial						-sa-	-sam-
	paucal		ī-		il-	pi-		pi̱-	pim-	kī-	kil-
	plural					hapi-		hapi̱-	hapim-
second-person	singular		is-	ish-		chi-		chi̱-	chim-	chik-		∅
	plural		has-	hash-		hachi-		hachi̱-	hachim-	hachik-		ho-	oh-
third-person			∅			∅		i̱-	im-	ik-

French

Prefix

is-

1. form of iso- before a vowel

Derived terms

• isentropique
• isenthalpe

Maltese

Pronunciation

• IPA^(key): /ɪs/

Article

is-

1. Alternative form of il-

Usage notes

• Used before the letter s. For details on usage, see the main lemma.

Welsh

Etymology

See is. Cognate with Cornish is-.

Pronunciation

• IPA^(key): /ˌiːs/, /ɪs/

Prefix

is-

1. lower, deputy, lieutenant, sub-, vice-, under-, by-

   ‎is- + ‎arlywydd (“president”) → ‎is-arlywydd (“vice-president”)

   ‎is- + ‎deddf (“law”) → ‎is-ddeddf (“byelaw”)

   ‎is- + ‎rhywogaeth (“species”) → ‎isrywogaeth (“subspecies”)

   ‎is- + ‎teitl (“title”) → ‎isteitl (“subtitle”)

   Antonym: uwch-

Usage notes

Triggers the soft mutation on the noun following.

Derived terms

Welsh terms prefixed with is-

Mutation

Welsh mutation
radical	soft	nasal	h-prothesis
is-	unchanged	unchanged	his-
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

References

R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “is-”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies