Synonym: natural event, occurrence, occurrent. Similar words: happen, happen to, happenstance, opening, evening, appealing, screening, good evening. Meaning: ['hæpnɪŋ] 
n. an event that happens. adj. taking place.
n. an event that happens. adj. taking place. 
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1, He would sit quietly and watch what was happening.
2, The children craned forward to see what was happening.
3, We hope to prevent anything unpleasant from happening.
4, He twisted around to see what was happening.
5, He whirled round to see what was happening.
6, They appeared not to know what was happening.
7, Is this really happening or is it a dream?
8, This is happening in every school throughout the country.
9, 'God knows what's happening in that madman's mind,' she muttered.
10, So what is really happening as the information bandwagon starts to roll?
11, I craned my neck to see what was happening at the head of the queue.
12, It's only fair that we tell him what's happening.
13, Can you update me on what's been happening?
14, What's happening in that room? It's bedlam in there.
15, He has a perfect right to know what's happening.
16, Accidents are happening with increasing frequency.
17, Things were happening too quickly and Brian was confused.
18, There is no fear of that happening.
19, There's no likelihood of that happening.
20, She ran out to see what was happening.
21, He was oblivious of what was happening.
22, They're too young to understand what is happening.
23, Accidents of this sort are happening with increasing frequency.
24, We went outside to see what was happening.
25, She went outside to see what was happening.
26, Quite a few people were milling about[sentencedict.com],[http://sentencedict.com/happening.html] but nothing was happening.
27, Her words brought home the enormity of what was happening.
28, In our general knowledge lessons , we learn about the people around us and the things that are happening.
29, The project would give scientists new insights into what is happening to the earth's atmosphere.
30, She couldn't quite believe that all this was actually happening to her.
More similar words: happen, happen to, happenstance, opening, evening, appealing, screening, good evening, happy, penis, appear, appeal, happily, appeal to, penitent, disappear, penitence, apperception, happy-go-lucky, dining, burning, warning, cunning, raining, morning, training, planning, earnings, spending, remaining.