properly, to build up or support; to foster as a parent or nurse; figuratively to render (or be) firm or faithful, to trust or believe, to be permanent or quiet; morally to be true or certain;
hence, assurance, believe, bring up, establish, [phrase] fail, be faithful (of long continuance, stedfast, sure, surely, trusty, verified), nurse, (-ing father), (put), trust, turn to the right.
a primitive root; (Isaiah 30:21; interchangeable with H541 (אָמַן), to go to the right hand)