characterized by or given to open exhibition or expression of one's emotions, attitudes, etc., esp. of love or affection

She wished her fiancé were more demonstrative.

serving to demonstrate; explanatory or illustrative.

serving to prove the truth of anything; indubitably conclusive.

Grammar . indicating or singling out the thing referred to. This is a demonstrative pronoun.

Grammar . a demonstrative word, as this or there.

adjective

cold , cool , inexpressive , reserved , restrained , uncommunicative , undemonstrative , unemotional , anticlimactic , confusing , inconclusive , mysterious

adjective

affectionate , candid , effusive , emotional , evincive , expansive , explanatory , expository , frank , gushing , histrionic , illustrative , indicative , loving , open , outgoing , outpouring , outspoken , plain , profuse , symptomatic , tender , unconstrained , unreserved , unrestrained , warmhearted , authenticating , certain , convincing , decisive , definite , final , proving , showing , specific , validating , conclusive , expressive