11 letters
- reradiation13
- respiration15
- restoration12
- retailoring15
- retaliating15
- retaliation13
- retaliatory14
- retardation13
- retroaction15
- tantalizers22
- tantalizing25
- termination16
- territorial12
- tolerations13
- totalizator21
- traditional14
- trampoliner19
- transalpine17
- translation14
- transparent16
- trapezoidal25
- trepanation16
- trepidation16
- trinitarian13
- tropicalize27
- uniparental18
- unitization23
- utilitarian14
- utilization23
- variational17
- ventilation18
- zillionaire23
- zoantharian24
- zooplankter29