Adjective

(en adjective)

Not secure.

Not comfortable or confident in oneself or in certain situations.

*{{quote-book, year=1963, author=(Margery Allingham)

, title=(The China Governess) , chapter=1 citation , passage=The half-dozen pieces […] were painted white and carved with festoons of flowers, birds and cupids. […]  The bed was the most extravagant piece.  Its graceful cane halftester rose high towards the cornice and was so festooned in carved white wood that the effect was positively insecure , as if the great couch were trimmed with icing sugar.}}

He's a nice guy and all, but seems to be rather insecure around other people.

Adjective

(er)

Shaking]] or [[tremble, trembling.

a shaky spot in a marsh

a shaky hand

Nervous]]; [[anxious, Anxious.

He’s a nice guy but when he talks to me, he acts shaky .

* {{quote-news

, year=2011 , date=April 10 , author=Alistair Magowan , title=Aston Villa 1 - 0 Newcastle , work=BBC Sport citation , page= , passage=Villa had plenty of opportunities to make the game safe after a shaky start and despite not reaching any great heights, they were resolute enough to take control of the game in the second half. }}

(of wood) Full of shakes or cracks; cracked.

shaky timber

* (seeCites2)

Easily shaken; tottering; unsound.

a shaky constitution

shaky business credit