Definition of stiffen in English:

stiffen

See synonyms for stiffen

Translate stiffen into Spanish

verb

1Make or become stiff or rigid.
with object ‘he stiffened his knees in an effort to prevent them from trembling’
- ‘my back stiffens up and I can't bend’
- ‘His knee also stiffens up after training, so it needs sorting out because it's an annoying problem.’
- ‘That's impressive for a man his age - perhaps, like me, he has a bad back that stiffens up when he sits.’
- ‘Hold a magnet nearby and the bits of iron will line up end-to-end; they form a rigid lattice that stiffens the mixture.’
- ‘He knows when to explode into the shot - when the defender is off balance or has stiffened his knees or has moved in too close.’
- ‘She tried to maneuver him to a dumpy sofa studded with a gaudy pattern of crimson roses, but Jack stiffened his knees.’
- ‘She tried to stand up, but her already tense muscles had stiffened considerably during the flight.’
- ‘He stiffened visibly, and stood there rigid, unsure of how to react.’
- ‘For one precious moment the air filled with dragonfly hatchlings, their limp wings stiffening in the sun, performing aerobatic exercises before migrating down to the river.’
- ‘The smaller muscles in the face and between the fingers start stiffening between two and four hours after death.’
- ‘She grabbed my hand and my body stiffened even further.’
- ‘The tallow and the beeswax was not able to be hardened and stiffened and this led to the invention of the moulding machine by Joseph Morgan in 1834.’
- ‘Her body stiffened slightly at the mention of that name.’
- ‘He suddenly stiffened up, looking at her as if he had just stepped across some kind of social boundary.’
- ‘He looked at me, and even though he smiled, I could see his posture visibly stiffen.’
- ‘I heard the deep rumble of Michael's voice and I immediately stiffened up.’
- ‘Nicole followed my gaze, and I saw her visibly stiffen at the sight of her sister.’
- ‘The Queen heard it as well, for Margaret saw her shoulders stiffen almost imperceptibly.’
- ‘Her shoulders stiffened at his words, puzzling him.’
- ‘Did his face stiffen for a moment there or was it just my imagination?’
- ‘She stiffened for a second, but then relaxed in his arms.’
become stiff, thicken
become rigid, become stiff, make rigid, make stiff, tense, tense up, tighten, tauten
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1. 1.1with object Support or strengthen (a garment or fabric), typically by adding tape or an adhesive layer.
  ‘The sealant stiffens the fabric and prevents the threads from showing through the stitching.’
  ‘Thicker foam also will stiffen the base fabric more than thin foam and requires the stability of heavy fabric, such as denim.’
  ‘He exaggerated the hips with panniered silk skirts, and skirts were stiffened into subtle bell shapes.’
  ‘The next essential garment was the corset stiffened with thin strips of whalebone.’
2. 1.2Make or become stronger or more steadfast.
  with object ‘outrage over the murders stiffened the government's resolve to confront the Mafia’
  ‘the regime's resistance stiffened’
  ‘We can hope for an early end to the destruction, but as resistance stiffens that prospect is by no means certain.’
  ‘Progressive Democrats revolted in the House caucus, stiffening resistance to the Republican bill.’
  ‘European governments are stiffening their resistance to war in Iraq in advance of the weapons inspectors' report to the United Nations security council tomorrow.’
  ‘It took four hours for British paratroopers to reach the bridges on foot, by which time German resistance was already stiffening.’
  ‘Little opposition was encountered at first, but resistance stiffened along the Litani river and Vichy troops counter-attacked at Merjayun and Kuneitra.’
  ‘But as the Japanese imperium widened, Chinese resistance stiffened.’
  ‘But Hitler's forces were regrouping, and as the Allies pushed nearer to Germany's borders, German resistance stiffened.’
  ‘Half a dozen scandalous cases after 1780 illustrated the difficulties and stiffened foreign resistance to Chinese jurisdiction.’
  ‘Once the Allies were on German territory, enemy resistance stiffened.’
  ‘After the German Army was chased across France, resistance began to stiffen.’
  ‘Although we could not get to Seville and be part of the 100,000-strong march, the events have only stiffened our determination in fighting capitalism.’
  ‘Japanese banks, besieged by requests to waive corporate debts, can stiffen their resolve to resist.’
  ‘On the other hand, this intimate contact with war can stiffen your resolve.’
  ‘And strikes can backfire: lack of public support can stiffen government resolve.’
  ‘Politicians stiffen penalties, and the police increase man-hours and arrests.’
  ‘Legislation that will stiffen the penalties for the offences of kidnapping and false imprisonment ought to be passed.’
  ‘Progressive Democrats revolted in the House caucus, stiffening resistance to the Republican bill.’
  ‘Total surprise was achieved, but resistance soon stiffened.’
  ‘At the same time, their position has stiffened.’
  ‘It's personal, and you can sense, amidst the all the uncertainty and trepidation, American resolve stiffening.’
  strengthen, harden, toughen, fortify, give strength to, reinforce, brace, steel, give a boost to
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