unstable
ADJECTIVE:
1. not stable; not firm or (firmly) fixed; not constant; unsteady.
2. liable to fall or sway.
3. unsteadfast; inconstant; wavering:
unstable convictions.
4. marked by emotional instability:
an unstable person.
5. not steady in action or movement; irregular (in movement):
an unstable heartbeat; an unstable pulse.
6. lacking stability, fixity, or firmness.
7. disposed to temperamental, emotional, or psychological variability.
8. wavering in purpose or intent; vacillating.
9. lacking steadiness; apt to move, sway, or fall:
an unstable tower.
10. liable to change or alteration:
an unstable economy; unstable weather.
11. characterized by lack of emotional control.
Examples:
An unstable nuclear reactor core // the minute we put the books down on the unstable desk, the whole stack went crashing to the floor.
Origin:
Middle English word dating back to 1175–1225; see origin at un-1, stable2. —Dictionary.com. // First Known Use of unstable: 13th century. —Merriam-Webster.
Sources: 1, 2.
Added: 8 June 2020 {6:26 PM} // Updated: 13 July 2020 {11:31 PM}
1. not stable; not firm or (firmly) fixed; not constant; unsteady.
2. liable to fall or sway.
3. unsteadfast; inconstant; wavering:
unstable convictions.
4. marked by emotional instability:
an unstable person.
5. not steady in action or movement; irregular (in movement):
an unstable heartbeat; an unstable pulse.
6. lacking stability, fixity, or firmness.
7. disposed to temperamental, emotional, or psychological variability.
8. wavering in purpose or intent; vacillating.
9. lacking steadiness; apt to move, sway, or fall:
an unstable tower.
10. liable to change or alteration:
an unstable economy; unstable weather.
11. characterized by lack of emotional control.
Examples:
An unstable nuclear reactor core // the minute we put the books down on the unstable desk, the whole stack went crashing to the floor.
Origin:
Middle English word dating back to 1175–1225; see origin at un-1, stable2. —Dictionary.com. // First Known Use of unstable: 13th century. —Merriam-Webster.
Sources: 1, 2.
Added: 8 June 2020 {6:26 PM} // Updated: 13 July 2020 {11:31 PM}