103 synonyms, 7 definitions, 1 antonym for CERTAIN

102 synonyms

#	Word	Frequency	Number of letters	Number of synonyms
1.	absolute	34.7	8 letters	129 synonyms
2.	accepted	46.8	8 letters	62 synonyms
3.	accurate	37.2	8 letters	79 synonyms
4.	actual	70.8	6 letters	52 synonyms
5.	airtight	0.89	8 letters	13 synonyms
6.	alert	21.4	5 letters	142 synonyms
7.	assured	11.7	7 letters	51 synonym
8.	authentic	11	9 letters	41 synonym
9.	believing	14.1	9 letters	36 synonyms
10.	candid	2.82	6 letters	83 synonyms
11.	carefree	1.55	8 letters	40 synonyms
12.	categorical	0.76	11 letters	55 synonyms
13.	clear	178	5 letters	316 synonyms
14.	cocksure	0.1	8 letters	21 synonym
15.	confident	26.9	9 letters	53 synonyms
16.	confirmed	46.8	9 letters	49 synonyms
17.	constant	34.7	8 letters	128 synonyms
18.	convinced	25.1	9 letters	36 synonyms
19.	convincing	9.33	10 letters	49 synonyms
20.	credulousen.synonym.one	0.2	9 letters	24 synonyms
21.	decided	123	7 letters	62 synonyms
22.	definite	6.03	8 letters	83 synonyms
23.	dependable	1.78	10 letters	42 synonyms
24.	designated	17.8	10 letters	15 synonyms
25.	destined	6.17	8 letters	40 synonyms
26.	determined	43.7	10 letters	133 synonyms
27.	different	389	9 letters	88 synonyms
28.	direct	81.3	6 letters	236 synonyms
29.	distinct	19.5	8 letters	111 synonyms
30.	distinguished	15.8	13 letters	97 synonyms
31.	easy	195	4 letters	94 synonyms
32.	especial	0.54	8 letters	27 synonyms
33.	established	79.4	11 letters	100 synonyms
34.	evident	9.77	7 letters	60 synonyms
35.	existent	3.24	8 letters	32 synonyms
36.	explicit	9.12	8 letters	71 synonym
37.	extant	1.78	6 letters	18 synonyms
38.	factual	4.07	7 letters	35 synonyms
39.	few	398	3 letters	25 synonyms
40.	firm	61.7	4 letters	199 synonyms
41.	fixed	50.1	5 letters	129 synonyms
42.	flawless	3.98	8 letters	32 synonyms
43.	given	257	5 letters	65 synonyms
44.	guaranteed	19.5	10 letters	30 synonyms
45.	honest	53.7	6 letters	114 synonyms
46.	hopeful	6.17	7 letters	76 synonyms
47.	imminent	4.68	8 letters	46 synonyms
48.	incontestable	0.09	13 letters	21 synonym
49.	incontrovertible	0.29	16 letters	21 synonym
50.	indisputableen.synonym.one	0.71	12 letters	41 synonym
51.	individual	100	10 letters	90 synonyms
52.	indubitable	0.04	11 letters	21 synonym
53.	ineluctable	0.06	11 letters	6 synonyms
54.	inescapable	0.91	11 letters	28 synonyms
55.	infallible	1.05	10 letters	22 synonyms
56.	involuntary	2.19	11 letters	43 synonyms
57.	irrefutable	0.55	11 letters	21 synonym
58.	keen	13.5	4 letters	147 synonyms
59.	necessary	81.3	9 letters	58 synonyms
60.	obvious	42.7	7 letters	108 synonyms
61.	particular	100	10 letters	139 synonyms
62.	patent	15.1	6 letters	59 synonyms
63.	personal	158	8 letters	41 synonym
64.	plain	26.9	5 letters	207 synonyms
65.	positive	97.7	8 letters	85 synonyms
66.	precise	13.5	7 letters	88 synonyms
67.	predestined	0.31	11 letters	25 synonyms
68.	proved	30.2	6 letters	29 synonyms
69.	real	398	4 letters	86 synonyms
70.	relentless	3.24	10 letters	58 synonyms
71.	reliable	19.5	8 letters	61 synonym
72.	respective	15.5	10 letters	8 synonyms
73.	satisfied	19.1	9 letters	54 synonyms
74.	secure	43.7	6 letters	250 synonyms
75.	set	389	3 letters	325 synonyms
76.	settled	27.5	7 letters	75 synonyms
77.	several	245	7 letters	24 synonyms
78.	single	257	6 letters	89 synonyms
79.	singular	5.5	8 letters	83 synonyms
80.	some	1580	4 letters	30 synonyms
81.	sound	141	5 letters	208 synonyms
82.	special	219	7 letters	65 synonyms
83.	specific	107	8 letters	61 synonym
84.	stated	55	6 letters	23 synonyms
85.	strong	166	6 letters	187 synonyms
86.	sure	468	4 letters	80 synonyms
87.	tangible	4.57	8 letters	52 synonyms
88.	trusting	5.25	8 letters	48 synonyms
89.	trustworthy	3.24	11 letters	66 synonyms
90.	trusty	1.07	6 letters	46 synonyms
91.	unalterable	0.12	11 letters	18 synonyms
92.	unassailable	0.35	12 letters	25 synonyms
93.	unavoidable	2.24	11 letters	15 synonyms
94.	undeniable	2.19	10 letters	32 synonyms
95.	undoubted	0.41	9 letters	13 synonyms
96.	unerring	0.19	8 letters	25 synonyms
97.	unfailing	0.32	9 letters	38 synonyms
98.	unquestionable	0.42	14 letters	33 synonyms
99.	unswerving	0.13	10 letters	15 synonyms
100.	unusual	28.2	7 letters	122 synonyms
101.	valid	24	5 letters	57 synonyms
102.	validated	2.4	9 letters	30 synonyms

1 synonym

#	Word	Frequency	Likes	Number of letters	Number of synonyms
1.	sealed	13.2	0	6 letters	25 synonyms

1 antonym

#	Word			Number of letters	Number of antonyms
1.	uncertain			9 letters	1 antonym

7 definitions

certain (Adjective) —	Definite but not specified or identified 6 examples
	1. ex. "set aside a certain sum each week"
	2. ex. "to a certain degree"
	3. ex. "certain breeds do not make good pets"
	4. ex. "certain members have not paid their dues"
	5. ex. "a certain popular teacher"
	6. ex. "a certain Mrs. Jones"
certain (Adjective) —	Having or feeling no doubt or uncertainty; confident and assured 2 examples
	1. ex. "felt certain of success"
	2. ex. "was certain she had seen it"
certain (Adjective) —	Established beyond doubt or question; definitely known 4 examples
	1. ex. "what is certain is that every effect must have a cause"
	2. ex. "it is certain that they were on the bus"
	3. ex. "his fate is certain"
	4. ex. "the date for the invasion is certain"
certain (Adjective) —	Certain to occur; destined or inevitable 4 examples
	1. ex. "he was certain to fail"
	2. ex. "his fate is certain"
	3. ex. "In this life nothing is certain but death and taxes"
	4. ex. "he faced certain death"
certain (Adjective) —	Established irrevocably 1 example
	1. ex. "his fate is certain"
certain (Adjective) —	Reliable in operation or effect 1 example
	1. ex. "a quick and certain remedy"
certain (Adjective) —	Exercising or taking care great enough to bring assurance 1 example
	1. ex. "be certain to disconnect the iron when you are through"

9 see also

#	Word	Number of letters	Number of synonyms
1.	assurance	9 letters	82 synonyms
2.	authority	9 letters	127 synonyms
3.	certainty	9 letters	35 synonyms
4.	confidence	10 letters	55 synonyms
5.	foregone conclusion	18 letters	3 synonyms
6.	self-assurance	13 letters	21 synonym
7.	self-confidence	14 letters	26 synonyms
8.	sure thing	9 letters	10 synonyms
9.	sureness	8 letters	15 synonyms

Similar words

— bound	— cardinal	— careful	— carton
— cartoon	— certainly	— certainty	— co-ordinate
— co-ordinated	— confident	— convinced	— coordinated
— cordon	— creation	— credence	— credentials
— cretin	— crudeness	— curtain	— curtains
— definite	— dependable	— destined	— doomed
— fated	— foreordained	— in for	— indisputable
— positive	— predestinate	— predestined	— predictable
— reliable	— sure	— sure as shooting

13 misspelling

ccertain ceertain cerrtain certaain certai certaiin certaim certainn certani certian certtain ertain kertain

With the same beginning

certainly certainty

With the same ending

ascertain uncertain incertain for certain

All synonyms in one line

absolute, accepted, accurate, actual, airtight, en.synonym.one, alert, assured, authentic, believing, candid, carefree, categorical, clear, cocksure, confident, confirmed, constant, convinced, convincing, credulous, decided, definite, dependable, designated, destined, en.synonym.one, determined, different, direct, distinct, distinguished, easy, especial, established, evident, existent, explicit, extant, factual, few, firm, fixed, flawless, given, guaranteed, honest, hopeful, imminent, incontestable, incontrovertible, indisputable, en.synonym.one, individual, indubitable, ineluctable, inescapable, infallible, involuntary, irrefutable, keen, necessary, obvious, particular, patent, personal, plain, positive, precise, predestined, proved, real, relentless, reliable, respective, satisfied, secure, set, settled, several, single, singular, some, sound, special, specific, stated, strong, sure, tangible, trusting, trustworthy, trusty, unalterable, unassailable, unavoidable, undeniable, undoubted, unerring, unfailing, unquestionable, unswerving, unusual, valid, validated, sealed.

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Synonyms, certain antonyms, definition Certain

1. certain (a)

2. certain (Adjective)