Have a tendency to exaggerate / lose his/her temper / make snap (quick) decisions

Alternatives to “thin”
slim = no fat, but not skinny
slender / petite (especially for women)
wiry = without an inch of fat

Alternatives to “old”
a pensioner / elderly (75+) / a senior citizen
middle-aged (50 +)

1. 
   6. instill
   

impart gradually

to instill interest/confidence

2. 
   inspirational
   

serving to uplift the mind, spirit, or creative powers

3. 
   rapport
   

a relationship of mutual understanding between people

to develop/create a good rapport

4. 
   empathy
   

understanding and entering into another's feelings

5. 
   fairness
   

conformity with rules or standards

6. 
   approachable
   

easy to reach

7. 
   firm
   

not soft or yielding to pressure

exp. "to be firm but fair"

8. 
   lanky
   

tall and thin and having long slender limbs

9. 
   stocky
   

having a short and solid form or stature

10. 
    potbelly
    

slang for a paunch

11. 
    cute
    

attractive especially by means of smallness or prettiness

12. 
    wiry
    

lean but strong

A wiry man is thin but strong

13. 
    chubby
    

sufficiently fat so as to have a pleasing fullness of figure

14. 
    double chin
    

a fold of fatty tissue under the chin

15. 
    slender
    

having little width in proportion to the length or height

She has got slender legs because they're thin in an attractive way

16. 
    gorgeous
    

dazzlingly beautiful

17. 
    charming
    

pleasing or delighting

18. 
    sideburn
    

facial hair that has grown down the side of a man's face in front of the ears (especially when the rest of the beard is shaved off)

19. 
    beard
    

the hair growing on the lower part of a man's face

20. 
    goatee
    

a small chin beard trimmed to a point

21. 
    moustache
    

an unshaved growth of hair on the upper lip

22. 
    broad-shouldered
    

having broad shoulders

23. 
    big-chested
    

marked by a large or well-developed chest

24. 
    ponytail
    

a hair style that draws the hair back so that it hangs down in back of the head like a pony's tail

25. 
    cheekbone
    

the arch of bone beneath the eye that forms the prominence of the cheek

She's high cheekbones which make her really attractive

26. 
    skinny
    

being very thin

27. 
    bony
    

composed of or containing rigid connective tissue

He's got bony elbows.

28. 
    petite
    

very small

29. 
    sixpack
    

a carton containing six bottles or cans

to have a six-pack is to have ripped abs

30. 
    curvy
    

having curves

31. 
    shapely
    

having pleasing proportions

32. 
    unambitious
    

having little desire for success or achievement

33. 
    unreliable
    

not worthy of trust

34. 
    cheerful
    

being full of or promoting cheer

35. 
    jolly
    

full of or showing high-spirited merriment

36. 
    moody
    

subject to sharply varying moods

37. 
    bad-tempered
    

annoyed and irritable

38. 
    surly
    

unfriendly and inclined toward anger or irritation

39. 
    conscientious
    

characterized by extreme care and great effort

40. 
    thorough
    

painstakingly careful and accurate

41. 
    easy going
    

easy unobstructed progress

42. 
    vain
    

having an exaggerated sense of self-importance

43. 
    pompous
    

puffed up with vanity

44. 
    conceited
    

having an exaggerated sense of self-importance

45. 
    stuck-up
    

(used colloquially) overly conceited or arrogant

46. 
    boastful
    

exhibiting self-importance

47. 
    open-minded
    

ready to entertain new ideas

48. 
    broad-minded
    

inclined to respect views and beliefs that differ from your own

49. 
    tolerant
    

showing or characterized by broad-mindedness

50. 
    narrow-minded
    

lacking tolerance or flexibility or breadth of view

51. 
    stubborn
    

tenaciously unwilling to yield

52. 
    assertive
    

aggressively self-assured

53. 
    self-confident
    

showing poise and assurance in your own worth

54. 
    self-assured
    

showing poise and confidence in your own worth

55. 
    arrogant
    

having or showing feelings of unwarranted importance

56. 
    bossy
    

offensively self-assured or exercising unwarranted power

57. 
    sympathetic
    

expressing compassion or friendly fellow feelings

58. 
    empathise
    

be understanding of

59. 
    trustworthy
    

worthy of trust or belief

60. 
    dependable
    

consistent in performance or behavior

61. 
    supportive
    

furnishing assistance

62. 
    caring
    

feeling and exhibiting concern and empathy for others

63. 
    mean
    

characterized by malice

64. 
    tightfisted
    

unwilling to part with money

65. 
    crafty
    

marked by skill in deception

66. 
    cheap
    

embarrassingly stingy

67. 
    stingy
    

unwilling to spend

68. 
    sly
    

marked by skill in deception