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subside

/səbˈsaɪd/·verb

to sink to a lower level; to become less intense and die down
Fig. 1 — The flood has the porch steps counted — four under water, the doormat somewhere below memory.
01Definition

To subside is to settle downward: sub- 'down' plus sidere 'to sit', the same root that gives sediment. Floodwater subsides as it drains and the level sinks; a storm, a fever or a wave of laughter subsides as its force sits back down toward calm. The word always measures against a peak — something rose, and is now returning to its resting level. Ground can subside too, sinking where mining or drought has emptied the space beneath it, which engineers call subsidence.

02In use
  • iBy morning the floodwater had subsided enough for residents to reach their front doors.
  • iiDoctors assured her the swelling would subside within a week.
  • iiiPrices may surge in a crisis, but analysts expect the turbulence to subside within months.
03Collocations
  • the floodwaters subsided
  • the storm subsided
  • the pain subsided
  • subside into silence
  • ground subsidence

Family subsidence (noun)

04Relations

=abate, recede, ebb, dwindle, diminish

≠surge, intensify, escalate

06TOEFL & IELTS

News English and IELTS Task 1 lean on it: floods, protests, inflation and pain all subside, and the verb keeps trend descriptions from repeating 'decrease'. Keep the axis clear against its neighbour: subside watches a LEVEL sink back down (water, swelling, noise), while abate watches a FORCE slacken (storms, winds, anger) — they overlap, but the pictures differ. Subsidence, the ground itself sinking, anchors engineering and environment passages. Do not let the spelling pull you toward subsidy or subsidise — money words whose meaning parted company with settling long ago.

07Asked
Are subside and subsidy related?
Distant cousins, not the strangers they look. Both go back to Latin subsidere, 'to settle down' — but subsidy travelled through subsidium, 'support, reserve troops': the soldiers who sit waiting behind the line. The meanings drifted apart long ago and never rejoined: a flood subsides, a government subsidises, and neither word can stand in for the other in modern English.
What is subsidence?
The ground itself sinking — the noun of subside in its most literal setting. Land subsides where mining hollows it, where drought shrinks clay soils, or where too much groundwater is pumped out; buildings above crack and lean, which is why property surveys flag subsidence as a serious defect. Engineering and environment passages in both exams use the term without glossing it.
What is the difference between subside and recede?
Direction. Subside is vertical: the level sits back down, as the flood in the scene above hands back one step at a time. Recede is horizontal: something withdraws and puts distance between itself and you — floodwater recedes from the fields, a coastline recedes, a hairline recedes. A flood does both at once, which is why news reports use either.
Can pain subside?
Yes — pain, swelling, fever and nausea all subside as they ease back toward normal, and the verb is standard in medical writing precisely because it promises a settling rather than an instant cure. Note the grammar: subside never takes an object. Symptoms subside on their own; no treatment 'subsides' them — a doctor waits for the swelling to subside.
What does 'subside into silence' mean?
Noise dying down by degrees: laughter, applause or an argument subsides into silence when it loses force in stages rather than stopping dead. English extends the same picture to bodies — a tired guest subsides into an armchair, sinking with the last of their resistance. Both uses keep the verb's core: a settling downward to rest.
What is the opposite of subside?
For levels and feelings, surge is the cleanest mirror: water surges and subsides, anger surges and subsides, prices surge and the panic later subsides. Intensify and escalate oppose the calming sense — a storm that should subside may intensify instead. Rise works for the plain level sense, but it lacks the drama of the peak that subside always looks back on.