outsider
[noun]
Synonyms: interloper, incomer, intruder, newcomer, odd man out, stranger

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Contrasted words: insider

[TahlilGaran] English Synonym Dictionary ▲

out‧sid‧er /aʊtˈsaɪdə $ -ər/ noun [countable]

1. someone who is not accepted as a member of a particular social group ⇒ insider:
I’m an outsider, the only foreign woman in the group.
to an outsider
To an outsider, the system seems complex and confusing.

2. someone who does not belong to a particular company or organization or who is not involved in a particular activity ⇒ insider:
a political outsider who is running for governor

3. someone who does not seem to have much chance of winning a race or competition
rank outsider British English:
Last year he was a rank outsider for the title.

[TahlilGaran] Dictionary of Contemporary English ▲

outsider
noun
I. not a member of a group
ADJ. complete | political, social
VERB + OUTSIDER feel I felt a complete outsider.
PREP. ~ to an outsider to the group

[TahlilGaran] Collocations Dictionary ▲

outsider
II. competitor who will probably not win
ADJ. complete, rank
PREP. ~ in The firm has gone from being an outsider in the market to being a market leader.

[TahlilGaran] Collocations Dictionary ▲