Relier Pairs IDIOMS. AGEVersion en ligne IDIOMS. AGE par María Marteles 1 mutton dressed as a lamb 2 rob the cradle 3 to be knee-high to a grasshopper 4 to act your age 5 long in the tooth 6 get on in years 7 feel your age 8 (be) over the hill 9 (live to a) ripe old age 10 silver surfer Have a romantic relationship with someone who is much younger than yourself. Very young or small child no to behave as someone younger Reach an age when you can no longer perform as well as before. An elderly person who uses the internet To live until you are very old. Someone who is growing old. a person who tries to look younger by wearing clothes designed for younger people Too old to do something Realize that you are no longer young