Dr. Mohammad Hossein Hariri Asl 
Extol Extol (verb) ɪkˈstəʊl/ US /-ˈstoʊl/ to praise somebody or something excessively – admire – exalt: This book is aimed at extolling the benefits of being a self-employed person. Antonyms condemn, criticize
Internal Internal (adj) /ɪnˈtɜː.nəl/ US /-ˈtɝː-/ occurring or existing inside a person, organization, place, country, object, etc. – intrinsic: He passed away due to intense internal bleeding. Antonyms external, extrinsic
Susceptible Susceptible (adj) /səˈsep.tɪ.bļ/ easily affected or influenced by something – vulnerable – at stake – liable: Stress can undermine your immune system, making your body susceptible to a variety of diseases.
External External (adj) /ɪkˈstɜː.nəl/ US /-ˈstɝː-/ occurring or existing outside a person’s body, country, organization, place, object, etc. extraneous, superficial – extrinsic: The company’s financial success has been undermined by so much external pressure.
Age-old Age-old (adj) /ˈeɪdʒˌəʊld/ US /-ˌoʊld-/ existing for a long period of time – ancient – long-existing: the age-old issue of racial discrimination
Enduring Enduring (adj) /ɪnˈdjʊə.rɪŋ/ US /-ˈdʊr.ɪŋ/ continuing and existing for a very long period of time – lasting: It was so difficult for her to delete the enduring bitter memories of her dismal childhood.
Astounding Astounding (adj) /əˈstaʊn.dɪŋ/ so surprising that it is almost incredible – astonishing – amazing: To her astonishment, the project was completed with an astounding success.
Intact Intact (adj) /ɪnˈtækt/ complete and not damaged – undamaged – unharmed: We’re planning a vacation to a distant area with intact nature for a week.
Underscore Underscore (verb)/ˌʌn.dəˈskɔːʳ/ US /-dɚˈskɔːr/ 1. to draw a line under a word, phrase, etc. to emphasize its importance and draw more attention to it – underline: Underscoring while reading is a consciousness-raising technique. 2. to put emphasis on something – emphasize: She underscored the plot of the story by dint of dramatization and visual …
Scant Scant (adj) /skænt/ 1. insufficient and very little – not enough – inadequate: The court decision was adjourned because of scant evidence.