express an opinion (verb) opine: think
Sinonime: answer to, appertain to, apply to, be about, be applicable to, be connected with, be dependent upon, be interdependent with, be pertinent to, be well taken, bear on, bear upon, belong to,
deal with, depend upon, have a bearing on, have connections with, have implications for, have relation to, have significance for, have to do with,
involve, pertain to, refer to, regard
Antonime: unconcern