insecure adj.
1 not safe
VERBS appear, be, look, seem | become | remain
ADV. extremely, very | increasingly | a little, rather, somewhat | financially men who are worried about losing their jobs and becoming financially insecure
2 anxious
VERBS be, feel | become, grow
ADV. deeply, extremely, profoundly, really, very | increasingly | a bit, a little, quite, rather | basically | notoriously a star who is notoriously insecure about her looks
PREP. about He felt a bit insecure about being left alone.
You can also check other dicts: insecure (English, 中文解释 ), wordnet sense, Collins Definition