1) Appropriate 2) Apropos 3) Fitting 4) Germane 5) Highly pertinent 6) Pertinent 7) Pertinent, well-chosen 8) Relevant 9) Suitable 10) Suited for the purpose 11) Well-adapted 1) Appropriate 2) Apropos 3) Good 4) Pertinent 5) Right 6) Suitable 
appropriate
• (a.) Very applicable; well adapted; suitable or fit; relevant; pat; -- followed by to; as, this argument is very apposite to the case.
Ap'po·site adjective [ Latin appositus , past participle of apponere to set or put to; ad + ponere to put, place.] Very applicable; well adapted; suitable or fit; relevant; pat; -- followed by to ; as, this argument is very apposite to the case. -- 
[adj] - being of striking appropriateness and pertinence
apposite 1. Especially well suited to the circumstances; particularly appropriate. 2. Suitable; well-adapted; pertinent; relevant; apt; such as, an apposite answer.
appropriate adjective being of striking appropriateness and pertinence; `the successful copywriter is a master of apposite and evocative verbal images`; `an apt reply`
suitable; well-adapted; pertinent; relevant; apt: an apposite answer.
being of striking appropriateness and pertinence[Intelligent words] being of striking appropriateness and pertinence