This document provides vocabulary definitions for 5 words: associate, barrier, estimate, fatigue, and flimsy. It defines each word and provides its part of speech, antonyms, and an example sentence. Associate means to connect or get together with others. Barrier refers to something that blocks or gets in the way. Estimate means to calculate or judge approximately. Fatigue means tiredness or exhaustion. Flimsy describes something that is weak, delicate, or breakable.

1. Vocabulary List 51
Associate
Barrier
Estimate
Fatigue
Flimsy

2. Vocabulary Word:
associate
(as/so/ci/ate)
Part of Speech
verb
(n) as/so/ci/ate (person)
(n) as/so/ci/a/tion
Antonyms:
• dissociate
• unbalance
• disagree
• not be supportive
Definition:
• get together
• connect
• interrelate
• accompany
Sentence:
She loves coming to this school
because she likes associating with
people from different countries.

3. Vocabulary Word:
barrier
(bar/ri/er)
Part of Speech
noun
Antonyms:
• doorway
• entrance
• entry
• pass
Definition:
• something that gets
in the way
• barricade
• fence
• wall
Sentence:
Sometimes time or money
can be a barrier to
accomplishing something.

4. Vocabulary Word:
estimate
(es/ti/mate)
Part of Speech:
verb
(n) es/ti/mate
Antonyms:
• exact amount
• work out exactly
• fact
• Truth
• actual cost
Definition:
• to judge tentatively
• calculate
approximately
• appraise
• evaluate
Sentence:
When you take a math test,
it helps if you can estimate
some of the answers.

5. Vocabulary Word
fatigue
(fa/tigue)
Part of Speech:
noun
Definition:
• tiredness
• weariness
• exhaustion
• weakness
Antonyms:
• energy
• liveliness
• freshness
• strength
Sentence:
To combat her fatigue on her
long work days, she takes a
nap in the afternoon.

6. Vocabulary Word:
flimsy
(flim/sy)
Part of Speech:
adjective
(adv) flim/si/ly
Definition:
• weak
• delicate
• breakable
• frail
• crumbly
Antonyms:
• strong
• firm
• healthy
• solid
• sturdy
Sentence:
Sometimes very expensive
clothes are flimsy; they break
easily.