squaring (?.)
- accommodation
- adaptation
- adjustment
- amends
- assimilation
- atonement
- attunement
- biquadrate
- coaptation
- compensation
- composition
- compromise
- coordination
- expiation
- expiatory offering
- four
- four-part diaphony
- foursome
- harmonization
- indemnification
- indemnity
- integration
- making amends
- making good
- making right
- making up
- paying back
- peace offering
- piaculum
- propitiation
- quad
- quadrangle
- quadrature
- quadrennium
- quadrilateral
- quadrille
- quadrinomial
- quadruplet
- quartet
- quatern
- quaternary
- quaternion
- quaternity
- quatrefoil
- quittance
- reclamation
- recompense
- reconcilement
- reconciliation
- rectangle
- redemption
- redress
- refund
- regulation
- reimbursement
- reparation
- repayment
- requital
- restitution
- retribution
- satisfaction
- square
- square dance
- synchronization
- tetrad
- tetragon
- tetragram
- tetragrammaton
- tetrahedron
- tetralogy
- tetraphony
- tetrapody
- timing