1. Fallen into decay or ruin.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• collaped,
• colapses,
• colapsed,
• callapses,
• collopsed,
• collapese,
• collopse,
• callapse,
• colaspsed,
• collapsees,
• callapsed,
• collapesed,
• collapsesd,
• calapsed,
• colapse,
• collapes,
• clapsed,
• collapeses,
• collasped,
• colapesed

• collapse,
• collapsible,
• colpocele,
• coliphage,
• collapses,
• coalface,
• collapsable.

The adverb for the word "collapsed" is "suddenly" or "abruptly".

The adjective form of "collapsed" is "collapsed".

The plural form of the word "collapsed" is "collapsed." The word does not have a distinct plural form as it remains the same in both singular and plural contexts.

The singular form of the word "collapsed" is "collapse"