" weakly "

1: chronically or repeatedly suffering from poor health;

  * e.g., " ... a weakly baby who required repeated hospitalizations "

•  Synonyms : 

•  ailing,

•  invalid,

•  sickly

•  Antonyms : 

•  healthy,

•  well

1: lacking bodily strength;

  * e.g., " ... the little boy was simply too weak to lift the box "

•  Synonyms : 

•  asthenic,

•  debilitated,

•  delicate,

•  down-and-out,

•  effete,

•  enervated,

•  enfeebled,

•  faint,

•  feeble,

•  frail,

•  infirm,

•  languid,

•  low,

•  prostrate,

•  prostrated,

•  sapped,

•  slight,

•  soft,

•  softened,

•  tender,

•  unsubstantial,

•  wasted,

•  weakened,

•  wimpish,

•  wimpy

•  Antonyms : 

•  mighty,

•  powerful,

•  rugged,

•  stalwart,

•  stout,

•  strong

2: lacking strength of will or character;

  * e.g., " ... I was too weak to resist the free doughnuts in the office break room "

•  Synonyms : 

•  characterless,

•  effete,

•  frail,

•  invertebrate,

•  limp-wristed,

•  milk-and-water,

•  namby-pamby,

•  nerveless,

•  soft,

•  spineless,

•  weakened,

•  weak-kneed,

•  weakling,

•  wet,

•  wimpish,

•  wimpy,

•  wishy-washy

•  Antonyms : 

•  backboned,

•  firm,

•  hard,

•  strong,

•  tough

3: not containing very much of some important element;

  * e.g., " ... the coffee came out too weak because I didn't use enough ground beans "

•  Synonyms : 

•  dilute,

•  diluted,

•  thin,

•  thinned,

•  washy,

•  watery,

•  weakened

•  Antonyms : 

•  full-bodied,

•  rich,

•  strong

1: as in gently, softly;

•  Synonyms : 

•  feebly,

•  gently,

•  softly,

•  delicately,

•  faintly,

•  frailly,

•  shakily,

•  bloodlessly,

•  halfheartedly,

•  languidly,

•  lazily,

•  listlessly,

•  spiritlessly,

•  impotently,

•  ineffectively,

•  ineffectually,

•  lamely,

•  nervelessly,

•  spinelessly,

•  uncertainly

•  Antonyms : 

•  dynamically,

•  energetically,

•  explosively,

•  firmly,

•  forcefully,

•  forcibly,

•  hard,

•  mightily,

•  muscularly,

•  powerfully,

•  roundly,

•  stiffly,

•  stoutly,

•  strenuously,

•  strongly,

•  sturdily,

•  vigorously,

•  fiercely,

•  hammer and tongs,

•  robustly,

•  roughshod,

•  sharply,

•  vehemently,

•  violently,

•  actively,

•  animatedly,

•  briskly,

•  crisply,

•  eagerly,

•  gamely,

•  heartily,

•  lustily,

•  snappily,

•  spiritedly,

•  spunkily,

•  vivaciously