This is the 6543rd most frequent Japanese word.
チック
"チック" (chikku) can mean "tic" (involuntary movement) or "chic" (stylish), depending on context.
In this sentence, "チック" is used as a suffix to imply a style or characteristic associated with 'retro'.
彼のファッションはレトロチックです。
His fashion has a retro style.
Here, "チック" is used as a suffix to describe something resembling or similar to 'human'.
ロボットの動きは人間チックでした。
The robot's movements were human-like.
In this usage, "チック" denotes the quality or feeling reminiscent of 'Europe'.