1-
effective
2-
critical
3-
key
4-
major
5-
substantial
6-
noteworthy
7-
prominent
8-
urgent
9-
foremost
10-
chief
11-
outstanding
12-
notable
13-
considerable
14-
imperative
15-
indispensable
16-
paramount
17-
worthwhile
18-
prime
19-
monumental
20-
to accentuate
effective
effective
Adjective
e
i
ff
f
e
ɛ
c
k
t
t
i
ɪ
v
v
e
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achieving the intended or desired result

example
Example
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The effective marketing campaign boosted sales significantly.
His effective communication skills allowed him to resolve conflicts peacefully.

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
critical
critical
Adjective
c
k
r
r
i
ɪ
t
t
i
ɪ
c
k
a
ə
l
l

extremely important or necessary

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
key
Adjective
k
k
e
y
i

essential and highly important to a particular process, situation, or outcome

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
major
major
Adjective
m
m
a
j
ʤ
o
ə
r
r

serious and of great importance

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
substantial
substantial
Adjective
s
s
u
ə
b
b
s
s
t
t
a
æ
n
n
t
ʃ
ia
ə
l
l

significant in amount or degree

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
noteworthy
Adjective
n
n
o
t
t
e
w
w
o
ɜ
r
r
th
ð
y
i

deserving of attention due to importance, excellence, or notable qualities

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
prominent
prominent
Adjective
p
p
r
r
o
ɑ
m
m
i
ə
n
n
e
ə
n
n
t
t

well-known or easily recognizable due to importance, influence, or distinct features

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
urgent
urgent
Adjective
u
ɜ
r
r
g
ʤ
e
ə
n
n
t
t

needing immediate action or attention

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
foremost
Adjective
f
f
o
ɔ
r
r
e
m
m
o
s
s
t
t

having the leading or primary position in terms of significance or rank

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
chief
chief
Adjective
ch
ʧ
ie
i
f
f

having the highest importance

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
outstanding
Adjective
o
a
u
ʊ
t
t
s
s
t
t
a
æ
n
n
d
d
i
ɪ
n
n
g
g

worthy of attention or recognition because of exceptional quality or distinct characteristics

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
notable
notable
Adjective
n
n
o
t
t
a
ə
b
b
ə
l
l
e

deserving attention because of being remarkable or important

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
considerable
considerable
Adjective
c
k
o
ə
n
n
s
s
i
ɪ
d
d
e
ɜ
r
r
a
ə
b
b
ə
l
l
e

large in quantity, extent, or degree

effectualefficacious
inconsiderable

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
imperative
imperative
Adjective
i
ɪ
m
m
p
p
e
ɛ
r
r
a
ə
t
t
i
ɪ
v
v
e

having great importance and requiring immediate attention or action

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
indispensable
indispensable
Adjective
i
ɪ
n
n
d
d
i
ɪ
s
s
p
p
e
ɛ
n
n
s
s
a
ə
b
b
ə
l
l
e

essential and impossible to do without

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
paramount
paramount
Adjective
p
p
a
ɛ
r
r
a
ə
m
m
o
a
u
ʊ
n
n
t
t

having the utmost importance or highest significance

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
worthwhile
Adjective
w
w
o
ɜ
r
r
th
θ
wh
w
i
l
l
e

deserving of time, effort, or attention due to inherent value or importance

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
prime
prime
Adjective
p
p
r
r
i
m
m
e

first in importance or rank

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
monumental
monumental
Adjective
m
m
o
ɑ
n
n
u
j
ə
m
m
e
ɛ
n
n
t
a
ə
l
l

having exceptional importance or significant impact

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective
to accentuate
to accentuate
Verb
a
æ
cc
ks
e
ɛ
n
n
t
ʧ
ua
ueɪ
t
t
e

to emphasize, highlight, or draw attention to certain features or aspects of something

Grammatical Information:

transitive

Word Family

effect

Verb

effective

Adjective

effectively

Adverb

effectively

Adverb

effectiveness

Noun

effectiveness

Noun

ineffective

Adjective

ineffective

Adjective

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