英語

randomly

gb/ɹˈændəmli/ us/ɹˈændəmli/
B2 英語
~ 7200
語義
0件の語義
adverb B2 property
1

without plan, method, or pattern

In a way that has no clear plan or order, so you cannot know what will happen next.

用法パターン: [something] is randomly [verb-ed]
よくある間違い:
Learners sometimes say *'in random'* instead of *'randomly'* or *'at random'*. Use *'The numbers were chosen randomly'* or *'The numbers were chosen at random'*, not *'The numbers were chosen in random'*. Another confusion is with *'arbitrarily'*, which implies a possibly unfair personal choice, while *'randomly'* usually suggests chance without personal bias.
類義語
haphazardly (Suggests lack of order or care, often slightly more formal and less technical than 'randomly'.) | arbitrarily (Emphasizes lack of reason or fairness rather than lack of pattern in data.)
対義語
systematically (Focuses on doing things according to a clear system or plan, the opposite of doing them randomly.) | deliberately (Stresses that something is done with clear intention, not by chance.)
コロケーション
randomly selected |randomly chosen |randomly assigned |randomly generated |randomly distributed |randomly scattered
テーマ
science |mathematics |daily life |core_vocabulary
例文
  • The winners were randomly selected from over 5,000 entries.
  • Participants were randomly assigned to two different test groups.
  • Raindrops appeared randomly on the dusty window.
  • The computers generate passwords randomly to improve security.
  • Police stopped drivers randomly to check for drunk driving.
学習者向け例文
  • The teacher picked a name randomly from the list.
  • Seats were given randomly, so we did not sit together.
  • Numbers are chosen randomly in the lottery.
  • The books lay randomly on the table.
  • He clicked randomly on different links.
adverb informal C1 property
2

suddenly, for no clear reason

Suddenly and for no clear reason, in a way that feels strange or not related to the situation.

用法パターン: [someone] randomly [verb]s
よくある間違い:
Learners may overuse this informal meaning in serious or academic contexts, where it can sound childish or vague. In formal writing, use more precise words like *'unexpectedly'*, *'without warning'*, or *'for no clear reason'* instead of *'randomly'*. Also, this sense usually describes human actions or everyday events, not scientific or statistical processes.
類義語
suddenly (Focuses more on quickness than on the lack of reason or connection.) | out of nowhere (Very informal, strongly emphasizes surprise; often more emotional than 'randomly'.)
対義語
predictably (Describes something that happens in an expected or understandable way, not strangely or for no reason.) | understandably (Signals that there is a clear, reasonable cause, unlike actions that happen 'randomly'.)
コロケーション
randomly text |randomly call |randomly start |randomly stop talking |randomly show up
テーマ
daily life |conversation |emotions |core_vocabulary
例文
  • He randomly started laughing in the middle of the meeting.
  • My ex randomly texted me last night after two years of silence.
  • The app randomly closes for no reason, and it's really annoying.
  • She randomly changed the topic to her vacation plans.
  • A guy randomly came up to us and asked for a photo.
学習者向け例文
  • He randomly called me at 3 a.m.
  • The light randomly turns off when I use it.
  • She randomly stopped talking to her friend.
  • My phone randomly plays music by itself.
  • The teacher randomly started to sing in class.
文法
辞書形
randomly
IPA
GB/ɹˈændəmli/
US/ɹˈændəmli/
音節・強勢
ran - domly (2音節)
Stress on 1st syllable (ran)
活用形
Noun
  • Base: randomly
  • Plural: randomlies
関連語
Forms
randomlies noun
Core family
random adjective B1 randomness noun
Related words
randomize verb B2 randomization noun C1
Negative and opposite forms
non-random adjective
表現

at random

1
/ˈæt ɹˈændəm/
fixed phrase

Without method or pattern in choice/action

Without any plan or order.

例文
  • The teacher called on students at random.
  • The books were stacked at random on the table.
  • The inspector chose five stores at random to visit.
  • The books were placed on the shelf at random.
  • Winners will be selected at random from all entries.
  • Guns were fired at random into the crowd.
  • I opened the book at random and started reading.

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