Synonym: gape, oscitance, oscitancy, yaw, yawning. Similar words: lawn, dawn, pawn, spawn, at dawn, fawning. Meaning: [jɔːn] 
n. an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom. v. 1. utter a yawn, as from lack of oxygen or when one is tired 2. be wide open.
n. an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom. v. 1. utter a yawn, as from lack of oxygen or when one is tired 2. be wide open. 
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1 She managed to stifle a yawn.
2 He struggled to stifle a yawn.
3 He faked a yawn. ?
4 The debate was a mockery. A big yawn.
5 He covered his mouth to hide his yawn.
6 Her yawn suggests that she is sleepy.
7 The concert was a predictable yawn.
8 I suppressed a strong urge to yawn.
9 The little boy gave a huge yawn.
10 She makes no attempt to stifle a yawn.
11 I just managed to smother a yawn.
12 Kay shook her head and stifled a yawn .
13 He tried to conceal his yawn behind his hand.
14 The party was a big yawn.
15 She stifled a cough/yawn/scream/sneeze.
16 She stifled another yawn and tried hard to look interested.
17 Do you start the day with a yawn instead of a smile?
18 The meeting was one big yawn from start to finish.
19 Rosanna stifled a huge yawn.
20 It was followed by a stifled yawn.
21 She felt desperately tired but couldn't yawn.
22 A yawn,(www.Sentencedict.com) then a big sigh.
23 He sighs and stifles a yawn.
24 Ickes is wont to yawn in mid-conversation.
25 Last-minute mini-scandals were a yawn.
26 He gave an ostentatious yawn.
27 She stretched her arms out and gave a great yawn.
28 The alarm did go off but all I did was yawn, turn over and go back to sleep.
29 She looked up from her work and gave a yawn .
30 We have to go to dinner with Simon's boss on Saturday which is a bit of a yawn.