1. Being where earthquake waves arrive simultaneously
   - coseismic

See also: unstable

• untasted
• untaught
• untaxed
• unteach
• unteachable
• untechnical
• untellable
• untempered
• untempting
• untenable
• untenanted
• untended
• Untermeyer
• untested
• untethered
• unthankful
• unthaw
• unthawed
• untheatrical
• unthematic
• unthinkable
• unthinkably
• unthinking
• unthinkingly
• unthought