| verb | decide by reasoning; draw or come to a conclusion “We reasoned that it was cheaper to rent than to buy a house” |
| verb | present reasons and arguments |
| verb | think logically “The children must learn to reason” |
| adjective | logically valid “a sound argument” |
| reason | noun | the state of having good sense and sound judgment |
| reasoner | noun | someone who reasons logically |
| conclusive | adjective | forming an end or termination; especially putting an end to doubt or question |
| conclusion | noun | the act of making up your mind about something |
| arguable | adjective | capable of being supported by argument |
| argument | noun | a discussion in which reasons are advanced for and against some proposition or proposal |
| argumentation | noun | a discussion in which reasons are advanced for and against some proposition or proposal |
| arguer | noun | someone who engages in debate |
| reasoning | noun | thinking that is coherent and logical |
| soundness | noun | the quality of being prudent and sensible |